I don't weld or cut much, but what always gets me is when milling or using the drill press, without fail, a piece of hot metal will always fly to my arm, etc. I don't wear loose clothes around the milling maching, usually not gloves either, and i dont like to take my eyes off the maching while it is running, so like you, Sometimes you just have to smell the burnt skin cause it may be more dangerous to react to it than to ignore it.
Soundguy
<font color=blue>"Welding and working mean lots of sparks flying. You learn to ignore the tingle they give you. Many has been the time when a dingleberry (little red BB of steel) has landed on exposed skin and there wasn't time or space to do anything but ignore it. Even when the smell of burning flesh almost turned the stomach. It isn't about macho. It's about work. "