This is sort of a shower thought because this morning I was using some shaving cream and I thought, if it turns out in 5 years this was giving me cancer, I wouldn’t be surprised.
Comes out a goo, ejected from a can with force, immediately becomes a foam?
Do you have anything you use that you think might be too good to be true?
Those water flavor squirts, mio or crystal light type stuff. I’ll drink plain water over just about everything else (egg nog is the weakness and exception right now…), but the various lemonades or fruit flavors are always nice to have around. I wouldn’t be surprised if something in their composition is not good for you.
A slightly more titillating answer would be lube. You’re putting something on a mucous membrane, and it’s almost guaranteed that some will be absorbed or ingested.