Like many animals, humans produce a myriad of scents from sweating, bacteria, possibly pheromones, etc. Many of these scents are used throughout the animal kingdom for mate choice, recognition of individuals, or signifying presence or territory.
I know that humans subconsciously react to some scent cues (see here, here, or here for examples), but it seems many humans find natural human scent to, well, smell. Interestingly, this article suggests that humans' smell is worse than that of other animals.
My question is: if these scents hold so much information, how/why did humans develop an aversion to the natural scent of other humans?
Further, when did this occur? -- recently or long ago in human culture? I know Egyptians made perfumes thousands of years ago, so this is not a fully recent trend. Perhaps someone could comment on the ubiquitousness of this aversion across modern cultures as well.