By Sarah Everts
Smithsonian Magazine
March 2012
In one 2005 study, gay men given anonymous samples of sweat preferred the scent of gay men, and heterosexual men fancied the scent of women. One’s nose can also help identify a genetically compatible mate. Researchers asked women to rate the odors of T-shirts worn by different men. Women preferred men whose DNA was different enough from their own that it would increase the likelihood of producing a child with a robust immune system.
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