Wrong. Try Japan. They're clean, polite, and courteous. Crowded trains in August (like all year) are surprisingly absent of body odor (and litter, and noisy people, ...).
Different folks are indeed different in some ways.
Well if you want to compare Japan to other countries, you should be aware that the fear of being a burden to others due to one's body odor is a very Japanese phenomenon [0].
Different folks are indeed different in some ways.