This doesn't bother me as much as it should, I think. Mainly because I've watched fellow friends who were kept in bio-isolation by their paranoid mothers turn in to athematic, allergenic messes who can't walk down the street without suffering from some life threatening conditition. Exposure to nasty stuff can have positive effects on the body. Really, it's the same idea that is behind the flu shot and other vaccinations.
That said... won't be drinking out of one of those glasses again. Eew.
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