Do humans have them?
Scientists haven't been able to identify a single human pheromone, and even if they did, it might be a moot point. "Humans may have them, but we don't know how they can affect other humans, because the only organ identified to be able to create a response to them is not found in humans," Schwartz said. So... yeah. Not looking good for pheromones.
Speculation about the existence of pheromones has mostly been fueled by the very real but very mysterious changes in behavior female fertility causes, but what element of another person's scent is actually driving the attraction is unknown. One school of thought is that humans have unique odor prints, due to a major histocompatibility complex (MHC), which is a set of proteins that regulate a person's immune system. Some scientists say this could even affect a person's mate choice (and likelihood of infidelity), since people may sniff out and be attracted to someone whose immune system is the opposite of their own, thus making the immune system of offspring more diverse. Those people with partners who have similar MHCs are more likely to stray, in search of that oh-so-sexy immunological diversity.
But still, not exactly pheromones.
Don't hold your breath for a pheromone spray that works
Although there’s evidence that supports the belief that humans respond to scents emitted by others, it's still unclear just how this process works. And since humans don't even have the organ known to stimulate and respond to pheromones in other animals (as Dr. Schwartz pointed out), it's probably safe to cancel your order for a bulk shipment of love juice.
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Julie Peirano is a freelance writer who blames her attraction to mountain men on pheromones. Follow her: @juliepeirano.