I'm with you Carl, I don't doubt for a second you can't smoke something, but I think you have to go out of your way to do it.
I mean, you have to want to do it.
I use a "surge protector" when ever I weld on any computer controled car. Or unhook the battery of course. Even if it is a CYA thing, so is wearing seat belts and I do that everyday as well.