Like fingerprints, no two people smell the same. A blogger at another website wrote that he hypothesized that the modern world of daily clean showers, perfumed soap, deodorant, aftershave, clothes washed in perfumed detergent, hair products, cologne, etc. have really gone beyond making people be able to live together and have, in fact, made us cozy up to folks we normally wouldn’t.
I think a lot of “bad couples” are really folks who liked each others perfumes but had they smelled the other person’s more natural scent, they would not have been attracted to each other.
Here is technical information from Wikipedia about the way bodies smell. See also HERE.
The main components of human axillary odor are unsaturated or hydroxylated branched fatty acids with E-3M2H (E-3-methyl-2-hexenoic acid) and HMHA (3-hydroxy-3-methyl-hexanoic acid), sulfanylalkanols and particularly 3M3SH (3-methyl-3-sulfanylhexan-1-ol), and the odoriferous steroids androstenone (5α-androst-16-en-3-one) and androstenol (5α-androst-16-en-3α-ol). E-3M2H is bound and carried by two apocrine secretion odor-binding proteins, ASOB1 and ASOB2, to the skin surface.
Body odor is influenced by the actions of the skin flora, including members of Corynebacterium, which manufacture enzymes called lipases that break down the lipids in sweat to create smaller molecules like butyric acid. Staphylococcus hominis is also known for producing thioalcohol compounds that contribute to odors. These smaller molecules smell, and give body odor its characteristic aroma. Propionic acid (propanoic acid) is present in many sweat samples. This acid is a breakdown product of some amino acids by propionibacteria, which thrive in the ducts of adolescent and adult sebaceous glands. Because propionic acid is chemically similar to acetic acid with similar characteristics including odor, body odors may be identified as having a vinegar-like smell by certain people. Isovaleric acid (3-methyl butanoic acid) is the other source of body odor as a result of actions of the bacteria Staphylococcus epidermidis, which is also present in several strong cheese types.
Factors such as food, drink, and diseases can affect body odor. An individual’s body odor is also influenced by lifestyle, sex, genetics, and medication.