> It has mostly to do with whether you’re infected with a stinky bacteria or not.

The bacteria is determined (partly) by your genetics and the type of sweat glads you have. Eccrine sweat glands go directly to the surface of the skin (secrete: water, NaCl, K), while apocrine sweat glands connect into hair follicle (secrete: protein, lipids,): the bacteria feed off the latter.

* https://en.wikipedia.org/wiki/Sweat_gland

The gene on whether you have (more) apocrine glands is ABCC11:

* https://en.wikipedia.org/wiki/ABCC11

Asians are more likely to have to have the gene variant that makes you less smelly (Allele A).