There are 100+ gas phase compounds that come from humans. Find other information about most of these families of compounds from wiki. Full list of compounds is here Methods and findings are here


A key component of body odour is the volatile thioalcohol, 3-methyl-3-sulfanylhexan-1-ol (3M3SH). The structure may be visualized as hexan-1-ol "substituted by a methyl group and a thiol group at position 3 " (pubchem) A major contributor to the formation of 3M3SH is the commensal bacterium, Staphylococcus hominis, which produces it as a by-...


This is kind of like asking why animals have so many different ways of moving quickly (dogs run, birds fly, kangaroos jump...) There is a problem, and evolution has solved the problem in different ways. In the case of herbivores (and in particular leaf and grass-eating herbivores) the problem is that their food is low in nutrients and high in indigestible ...

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