Bill, Avgas is bad for you when you spill it on your hands. Exhaust is really bad for you. I sprayed some Stits Poly the other day without a respirator (I know, but it was a small patch and my respirator finally fell apart) which is bad too. The fact is we expose ourselves to many dangers. Surely we should reduce the ones we can-like smoking. But, unlike Avgas, exhaust and, a deteriorated respirator, smoking has a way of correcting itself. It kills the smoker. Until enough people wise up or die I'd say the best thing to do is avoid what you can-and rip a huge fart for when you can't!!! That's my favorite when walking into WalMart through their "smoke zone", i.e. the front door.