Farangs (foreigners, basically Euros), you see, not to put to fine a point on it, stink. The Thai, on the other hand, have relatively little body odor. Now we know why. It's in the ear wax...
Japanese Scientists Identify Ear Wax Gene - New York Times:I feel better now. It really wasn't my fault.
...They write that earwax type and armpit odor are correlated, since populations with dry earwax, such as those of East Asia, tend to sweat less and have little or no body odor, whereas the wet earwax populations of Africa and Europe sweat more and so may have greater body odor.
BTW, as a physician I much prefer wet ear wax. Removing the dry stuff from a child's ear is a royal pain.