Coping with body odor

One thing you might try. Wash your armpits normally when you shower or bathe. The wash them again using the lemon-scented kitchen liquid handsoap, that is designed to eliminate fish or onion odors from the hands of a cook. Just use this soap on your armpits. It leaves you smelling lemony-fresh.

This article (including the links and citations) contains a lot of useful information:

http://en.wikipedia.org/wiki/Body_odor