New research reveals that armpit odor in men may be the key to their getting together with their dream woman.
What's more - the chemicals in your armpit's sweat can make her decide if you are the one for her.
According to the study, conducted by researchers from the Monell Chemical Senses Center in Philadelphia, Pennsylvania, underarm sweat contains a complex compound of odourless pheromones that have a powerful subconscious effect on females, reports Health24.com.
In the research, the scientists found that the exposure to the pheromone from the male armpit accelerated the release of the luteinizing hormone - which controls menstruation.
The female test subjects said they felt increasingly relaxed as they sniffed the hormone.
The research team has also speculated that men's fragrances may one day contain male pheromones, which would presumably be irresistible to any woman.
There's also evidence to suggest that pheromones discourage inbreeding, through part of the human genome called the major histocompatibility complex (MHC), which plays a role in sexual attraction as well as combating disease.