: A biochemistry professor I met at a
: symposium this weekend stated that there should be no problem working with
: epoxy in your living space, given epoxy's low vapor pressure and toxicity.

This is reasonable

: He believes that
: if you are likely to be sensitized, it will happen fairly quickly and is
: more of a genetic pre-disposition than a cumulative effect

This is not really true. The effect of repeated "insult" with the amine hardeners of epoxy can indeed ultimately lead to sensitization. This is true for many things, poison ivy and shellfish are classic examples. Life long seafood eaters are just hit one day with a huge rash, eliminating them from the shellfish food chain. The worst thing is that once sensitized it's likely that you will never de-sensitize. Best to not tempt your immune system, especially if your livelyhood depends on it.