they are also made with typical (probably cheap) medium carbon steel (spring steel). stainless steel is used for coils but that contains chromium that makes it stainless. and even the stainless that is used in coils is high quality. spring steel will rust quickly if it's heating repeatedly as if used in a coil. ...ejuice feels oily. maybe that would slow it down? also cheap (who knows what) spring steel from who knows where, with who knows what regulations in manufacturing(considering its intended purpose there are probably no standards), is it worth the risk? ...i wouldn't. would it work? probably would work fine.
if you weld indoors you probably breathe a lot of shit too. is it healthy? doubt it. will it kill you in a week? doubt it.