GET RID OF ARMPIT ODOR
There's an old amateur science website, "Project Kill BO", killbo.com, which
showed us how to experiment with armpit odor. I tried their suggestions
and found that they actually work. Holy. Crap. The secrets of the
universe? They're all sitting there on old 1990s websites.
It's quite simple: get rid of the bacteria. Armpit odor comes entirely
from symbiotic bacteria living on skin and hair. You've discovered this
if you've ever had to wash with sterilizing soap for surgery. More
interesting is the fact that the armpit bacteria live in cloth, and they
easily survives washing, to say nothing of the boiling temperatures in a
clothes dryer. (Maybe they're thermophiles which enjoy live
steam!) Antibacterial antiperspirants don't work, since your
shirts are a haven where the bacteria survive.
So you have to sterilize your shirts. If your shirts remain contaminated, no amount of soap and multiple showers and painful scrubbing with bristle brushes will halt your stench. Fortunately these bacteria are easily killed with chlorine bleach.