Can you smell how attractive someone is by sniffing that person’s sweaty T-shirt?
Can you
smell how attractive someone is by sniffing that person’s sweaty T-shirt?
Well,
maybe. It depends on which scientist you ask.
It has become common for the mysteries of
attraction to be chalked up to pheromones. Pheromones are chemicals that we,
and other mammals, all vertebrates really, secrete that affect the behavior of
other members of our species — not unlike those we’re familiar with in the
plant world. They are not
the same as odors, although they are often used
synonymously, and don’t really have a discernable
scent.
They were instructed to avoid smelly rooms and refrain from using
perfumed detergents and soaps.
That does not stop people from having pheromone
parties, where participants sleep in a T-shirt
for three days, then bag them up and have others smell them out to try to pair
themselves up romantically. Why are we linking the science of smell with
T-shirts and love anyway? One popular study in the ’90s kicked off the
pheromone phrenzy.
Swiss scientist Claus Wedekind ran a study published in 1995 in which men wore cotton T-shirts
for two consecutive nights and then placed the shirts in plastic bags. They
were instructed to avoid smelly rooms and refrain from using perfumed
detergents and soaps. Women were asked to smell the shirts and rate them for
“intensity, pleasantness and sexiness.”
Before
the smell tests, Wedekind had collected DNA samples from all of the
participants in an effort to see if body odor correlated with their genes. He
was looking at the major histocompatibility complex (MHC) genes specifically,
as those are tied to our immune system’s markers of identity.
The
results? Unless they were taking oral contraceptives, the women showed a
preference for T-shirts from men with dissimilar MHC genes. A study on
laboratory rats conducted in the ’70s had suggested that animals choose mates
with dissimilar MHC genes, and the resulting speculation was that this could be
a genetic method of preventing inbreeding or a way to diversify immune systems
in offspring. Does this mean our smells stop us from being attracted to our
siblings?
Not so
fast.
A 2008
study showed that Wedekind’s study had
overlooked nuances. Sometimes, in parts of the world, spouses have similar MHC
gene profiles. Basically, MHC can influence mate choice in some human
populations, but not all. Social factors are still at play.
Should everyone just stop wearing deodorant?
Shortly after Wedekind’s study, a New
Mexico study used T-shirts and concluded
that “women at their most fertile time of month will prefer the odor of the
fittest-looking men.” Another study, also released in 1998, claimed the odor
from women’s
underarms can change the timing of other
women’s menstrual cycles.
Smell studies and the debate about whether human pheromones exist continue to play
out to this day. Marketers have latched on to this trend, and you can even
buy pheromone-enhanced body wash. In fact, just this year a study was
published concluding that we are likely to be genetically similar to our friends, and some of those common genes
involve smell.
What
does this all mean? Should single guys and gals jump over to pheromone parties
and start smelling cotton shirts out of bags? Does your best friend smell
things more similarly to you than your acquaintance does? Should everyone just
stop wearing deodorant?
All
science has shown is that human pheromones likely exist, and smells may or may
not help you determine mate choice, depending on where you live. So basically,
it is all up in the air. Probably though, you can skip the pheromone-enhanced
body wash. But, for our sake, don’t skip the deodorant.
Pasted
from : www.ozy.com