Welding fume consists of airborne un-burnt flux residues, particles of both filler rod material as well the material substrate and heat fume generated from the welding process itself, fumes can normally be seen. Exposure both short and long term should be avoided at all costs.The best way of preventing this is to prevent the fumesdust from getting into the breathing zone of the operator by collecting it before it gets airbourne.
Working with stainless steel may produce welding fumes containing nickel and chromium. If you have asthma, exposure to nickel can make your illness far worse. Chromium can aggravate or cause sinus problems. Both nickel and chromium exposure may cause cancer!