Researchers from the University of York worked with scientists from Unilever, which is the company behind some of the most popular brands of deodorants, to discover a so-called “BO enzyme.” That specific enzyme is only found within certain bacteria and is responsible for the characteristic armpit odor. The research specifically highlighted how the bacteria evolved a specialized design to produce key molecules humans perceive as body odor.
— Read more in Scientists identify a key enzyme related to body odor at SlashGear.
Heh, and some perfumes seem to emphasize this. ?