I don't mind a little healthy daily sweat in people who clean themselves regularly; I do gag when I'm next to someone who reeks of stale body odor. At that point, I figure the person's scent receptors have shut down out of self-defense. (I think most geeks just don't notice; most of the crusties I know have ethical and environmental concerns about deodorant, like you.)

I've tried using the organic deodorant that's unscented and comes without antiperspirant, but I sweat so much that it's impractical for me. Stupid genetics.