The Power of Smell

Kerry's picture

Below is an article called "Aroma and Arousal".

Excuse the pun, but I'd like some feed-back on it from those who grew-up with - or without - a mom who cooked for them.  Does the smell of certain foods trigger sexual thoughts... or is it more true that the quickest way to a man's heart is through his stomach, and "comfort" food?

Aroma and Arousal

By Scott McCredie for MSN Health & Fitness

http://health.msn.com/centers/mensexualhealth/articlepage.aspx?cp-documentid=100167992

You come home after a long day of work to find dinner prepared and your partner sitting at the table with a sly grin. The meal is like none you've ever had.

First course: cheese pizza, warm and gooey but kinda bland. That's followed by a bowl of buttered microwave popcorn. Revenge for something you said? Then, a weird dessert: pumpkin pie smothered with lavender ice cream.

"Honey," you finally ask, "is everything okay?"

Odd Food Smells and Libido

Pumpkin pie and lavender, and other food smells like doughnuts and licorice, don't seem like the kinds of odors men would find sexually stimulating. Yet for several years, these allegedly potent odors have appeared in media stories about male aphrodisiacs, garnering wide-eyed looks and more than a few guffaws.

The odors from the above-mentioned foods were the most sexually tantalizing of those tested in a study carried out in the late 1990s by Dr. Alan R. Hirsch, who directs the Smell and Taste Treatment and Research Foundation in Chicago.

Among all the odors tested, the combination of pumpkin pie and lavender produced the greatest increase in arousal (a 40 percent increase in penile blood flow).

The next most arousing odors were a mix of cinnamon buns, doughnuts and licorice; pumpkin pie and doughnuts; orange; and lavender and doughnuts. Other stimulating aromas were buttered popcorn and cheese pizza. About what you'd expect to smell in a frat house rec room the morning after a big party.    

Sexual Scents: Fantasy?

Brown University psychologist Rachel Herz, who has made a career investigating the science of scent, laughs a little derisively when asked about the Hirsch study.

"There's nothing inherent about the scent of any particular food that makes it sexual or arousing," says Herz, author of the upcoming book The Scent of Desire: Discovering Our Enigmatic Sense of Smell (Harper Collins, October 2007). "There's nothing inherent about any odor to make you do anything. It's all a function of how you've acquired the meaning of that smell."

And the meaning of pumpkin pie's odor to these 30 men?

"How odor comes to have meaning to the person is through their past experiences with it," she says. "So without ever having smelled pumpkin pie before, it's not going to do anything for you. But if your first sexual experience was at Thanksgiving under the dessert table, then that scent may become associated with it. In the future, when you smell pumpkin pie, you are brought back to that time and place in a very instant and visceral way, and may experience sexual arousal."

A study Herz directed at Brown, published in the International Journal of Comparative Psychology, proved the validity of this idea with several experiments. One involved 30 women playing a computer game. Permeating the air was a novel odor concocted from buttered popcorn, dirt, and rain. The more satisfying it was for a woman to play the game, the more likely it was for her to rate the odor as pleasant. Other experiments showed a similar trend.

Smell and Emotion

Why is it that smells can be so evocative and, in some cases, sexually stimulating? The answer has to do with human physiology and psychology.

Among the senses, smell is different from the other four primary senses because it is connected to the part of the brain responsible for emotions and memory. In fact, according to Herz, the olfactory cortex-the part of the brain where smells are processed-was the site from which "the parts of the brain that are responsible for emotional processing, associative learning, basic memory and motivation-the collective structures of the limbic system-evolved from. In other words, the ability to experience and express emotion grew directly out of our brain's ability to process smell."

Herz believes the link between emotion and smell is so strong that they're "functionally the same." One result of this connection is that once a smell is associated with an emotion or memory, it tends to remain there for a long time. If you come across that odor again, your brain makes the association so quickly that you don't have to even think about it. It's almost a reflex.

And first impressions count. Herz says she likes the odor of skunk because she has positive memories associated with her first encounter with the perfume of a skunk: riding in a car through the country on a lovely summer day with her mother. Another example comes from a woman Herz knows who told her she hated the smell of roses because the first time she had smelled them was at her mother's funeral.

The role of scent in creating memories was demonstrated in an unusual German study published in Science earlier this year. Scientists had subjects play a computerized game in which they memorized the location of playing card pairs. Once a pair's location was learned, the subjects received a waft of a strong rose scent. Later, when the subjects went to sleep (a time when the brain processes things it has recently learned), the rose scents were again administered. The next day, the rose-scented sleepers performed an average of 11 percentage points better on memory tests of card pair locations. "By presenting the rose odor cues we . enhanced the transfer of these memories into the neocortex," neuroscientist Jan Born, one of the study's co-authors, told The New York Times.

Men: Pavlovian Dogs?

Herz says she knows of no scientifically credible research that has looked at specific odors that provoke male sexual response. She ascribes the dearth of scientific research into odors and desire to the fact that there is not enough commercial interest.

"From the point of view of the marketplace, what's really more of a moneymaker is a fragrance that will make women sexually aroused and interested in men," she says. "It's somewhat culturally taken for granted that men are always sexually aroused. The harder part is getting women to be."

But Hirsch believes that Herz is being unfair to his study and too simplistic in her analysis of why an odor can be sexually arousing. He says his study (which Herz admits she hasn't seen) is scientifically valid. It was randomized, controlled, and peer-reviewed before being published in three different journals, including the Journal of Neurological and Orthopaedic Medicine and Surgery.

"Sexual arousal is inhibited by all sorts of different things," Hirsch explains. "By inhibiting those inhibitors [with odors], you can induce sexual arousal. It doesn't have to be a direct affect."

He offers several other possible reasons why these food odors increased sexual arousal.

"It could have induced a Pavlovian conditioned response, making men recall their girlfriends and wives," he says. Or they could have stimulated a part of the brain called the RAS (Reticular Activating System), increasing the men's alertness and their awareness of sexual cues around them. Odors could also have acted directly on another part of the brain, the septal nucleus, which controls a male's erection. "There's a direct anatomic connection between the olfactory bulb at the top of the nose and the septal nucleus. So anatomically it makes some sense."

The biggest challenge in interpreting the results of his study, Hirsch says, was to find a hypothesis that might explain why food odors were always sexually stimulating to males, when items such as perfume were not. "The best theory we could come up with," he says, "was evolutionary. That in our distant past our ancestors would congregate at a point of food kill. That's where they would have had the greatest chance of finding a mate and having successful procreation. So there may have been a selective advantage to have increased penile blood flow in response to the smell of food."

Sniffing Out What Works for You

Although plenty of potentially arousing scent elixirs exist for men, the trouble is finding the ones that appeal to an individual. It's a daunting task because the average human nose is capable of distinguishing between 10,000 to 40,000 different odors.

If no universal aroma aphrodisiac can exist, how does one go about finding effective scent triggers?

"I don't know, other than retrospective self-analysis," Herz says with a laugh. "You can think of a past sexual experience, or a lover who had a particular fragrance you found exciting, or be aware when you come across an odor you find arousing."

Another way to discover what odors pique your carnal interests, as well as those of your sweetie, would be to pull on your lab coat, grab some test tubes, and start experimenting. If that doesn't sound romantic enough, try heading to the bedroom with an armful of fruits, vegetables, candies, cakes and liquors-and anything else you might care to sniff, nibble, or rub.

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Turning the tables: What smells good to a woman?

Love at first ... scent?

Research shows a woman’s sense of smell can lead her to Mr. Right
By Ian Kerner, Ph.D.
Sex therapist and relationship counselor
updated 3:52 p.m. ET, Thurs., Jan. 24, 2008

Wondering if he’s “the one”? Forget love at first sight and focus on love at first scent.

You know how a chance whiff of an old lover’s perfume or cologne can send you right back into the agony and the ecstasy of that relationship? Even more homey smells, like your favorite childhood meal, have the ability to seemingly transport you in time, back to being that little kid again. Smell is a powerful sense that goes directly to the core of our emotional brain and it plays a key role in attraction.

Fascinating research shows that a woman’s sense of smell can lead to her to Mr. Right, at least reproductively speaking. Research has shown that each of us will be attracted to people who possess a particular set of genes, known as the major histocompatibility complex (MHC), which play a critical role in our immune systems. Mates with dissimilar MHC genes produce healthier offspring with broad immune systems.

How do people who differ in their MHC find each other? This isn't fully understood, but we know that smell is an important cue. People appear to literally sniff out their mates. In studies, women tend to rate the scent of T-shirts worn by men with dissimilar MHCs as most attractive, whereas T-shirts worn by guys with similar MHC profiles tend to be rated as “fatherly” or “brotherly,” but not boyfriend material. This is what sexual "chemistry" is all about. We’re drawn to certain people, without quite knowing why.

In my own surveys of men and women, women rate scent much more highly than men. This makes sense evolutionarily speaking, since women carry children for nine months during pregnancy and would need to sniff out a good mate who would stick around and support them.

Many women who have satisfying sex lives claim to love the scent of their guy, while many women who have dissatisfying sex claim their guy’s scent does nothing for them, or even turns them off. When I talk to women in relationships who claim that the sexual attraction was never really there to begin with, many also say that they didn’t like, or notice, his smell.

So, ladies, ask yourself: Do you like the way he smells?  Does it turn you on? Get you going?

Here are some tips to put the power of smell to work for your sex life — and maybe your future progeny. Remember, if you’re into his smell, it goes a long way toward speaking to chemistry. If you’re not, it could have a negative impact on the relationship.

  • If you’re wondering if he’s the one, take a good whiff of some of his clothes — how does it make you feel? Do you think warm, fuzzy thoughts or do you think he should really do his laundry? Or, try an overnight with a favorite article of his clothing. Many women love to sleep in their husband’s shirts, wear their men’s sweatshirts and are picking up on the scent, whether it’s conscious or unconscious. Do you like to wear his stuff when he’s not around? It’s another sign along the trail to sniffing out your MHC compatibility.
  • Take a break from the pill and use another form of birth control. Research shows that the pill may interfere with a woman’s ability to sniff out a compatible mate, since it tricks the body into thinking she’s already pregnant. Some researchers suggest that if you’re single, you should forgo the pill until you’re sure you’ve met your match. Try another form of birth control and see if some scent-awareness appears.
  • Try some scent-sational aphrodisiacs. A study conducted by the Smell and Taste Research Foundation in Chicago uncovered some powerful smells for boosting his arousal. The scent of lavender and pumpkin pie, and donuts and black licorice, in particular, increased blood flow to the penis by nearly 40 percent! So turn up the volume on an attraction that’s already there with some strategic baking or candles on your next date night at home.
  • Smell-train your man. Men may not have as keen a sense of smell as women, but it’s still a sense that’s often neglected. One female patient told me that she had a secret. Whenever her husband wanted to have sex, she would go freshen up and put on some perfume. He had become so used to the association of that scent and sex, that when she was in the mood, all she had to do was put some on and he wanted to have sex.
  • Scent can help fuel the flames of desire — and cool the flames of conflict. When you’re fighting, take a break to “hug and smell” — 20-second hugs raise oxytocin levels (the feel-good chemical) and following your nose will help you put the tension behind you.

So what’s the lesson, ladies? Follow your nose, it always knows!

Ian Kerner is a sex therapist, relationship counselor and New York Times best-selling author of numerous books, including the recently published “Sex Detox: A Program to Detoxify and Rejuvenate Your Love Life.” He was born and raised in New York City, where he lives with his wife, two young sons and plump Jack Russell terrier.