If you handle peppers with your bare hands, you can remove most, if not all, of the heat with a halved tomato. Just rub it all over your hands as if it were a bar of soap, then rinse. I thought it was a screwy idea at first too, but I tried it recently after cutting up a bunch of habaneros to make hot sauce and jelly. It works great!
A: Hello D. Boland:
It is entirely possible that the acid in tomatoes counteracts the capsaicin, which is an alkaloid.–Dave