I don't know how many times when TIG welding I pause only for the tip of the wire to find it's way to my belly while I examine the work. I usually smell the flesh right before I feel the sting. I was getting ready to use the plasma torch one day. I had all my safety gear on, goggles, ear muffs, face shield, etc. Right before I was going to use it I reached up to re-adjust my goggles because they were falling down with all the other "Safety Equipment" on my head. As I was adjusting my goggles, I heard the air valve kick on meaning.....I pulled the trigger......and the tip was pointing at my head and was in fact up against my head. As soon as I heard the air valve I pulled both hands away and dropped everything. As I did the plasma blew off my head leaving a 2" diameter circle clear of hair. The smell of burnt flesh and hair with a lock of hair on the ground. I just started laughing.