This evening we started welding stainless steel, which has a faint and oddly clean smell. It's a bit awkward to work with, as you have to move the torch quickly; otherwise, the back of the weld carbonizes, which will result in weld failure. Of course, if you move too quickly, you won't get a weld with quality penetration.
We started with lap joints without filler. Then we did lap joints with filler, which was almost easier, despite the greater hand-eye coordination issues.
Were I not so sick, I surely would have had the patience to make a better weld, but I just could not stay. My nose kept running everywhere.