Whither this is done via genetic manipulation or the creation of an artificial organ, I don't care. The result would be an organ which takes certain chemicals, which enter the body via ingestion, and mixes them in with your sweat. Not only would this make the application of many things easier, it could also allow one to excrete potentially dangerous chemicals before they can do any damage.
This would be useful for bug spray, colonge/perfume, and (ironically) deodorant.-- nick_n_uit, Jun 27 2001random, halfbakery