As someone who lived in China for years I always laugh at this myth, you clearly haven't traveled by crowded Chinese subway every day if you think Chinese don't stink (and they make up pretty much all East Asians).
And not to sound racist, but black people have (often) very different stench from the rest, that one is not Chinese (racist) myth.
But to be honest every race/nation I met stink, your nose is just blind to the people you meet most often. It's same with my apartment when I return back after longer vacation I can notice its specific (new) smell still even after years living there (especially if I won't leave windows a bit open for air exchange), but if I'm away just for a day or two I don't smell anything.
