I agree we all need reminding once in awhile to not get too careless about a lot of things we do,both working and in our hobbies, and I agrre the OP was trying to warn us of this. But leaving out part of the story so that many who have done worse without the almost immediate and serious effects it had on him sort of lessens the story's credibility. Welding as we/I did in an almost totally unventilated shop to the point it was hazy with smoke wasn't healthy for sure, but the effects were nowhere near that immediate or severe as his. Would like to hear a little more about the problems from welding stainless. I used to operate a boat propeller repair shop as a sideline and welded a lot of damaged stainless props.