Place the metal that you are welding in a position that will allow fumes to move away from the breathing zone. Open windows and doors to allow sufficient ventilation. If you are unable to relocate the metal you are working on and the area is not well ventilated, consider bringing in fans.
Wear a welding helmet that fits snugly around your head. This will help to block the poisonous fumes from the welding material.
Use a downdraft bench when welding to avoid headaches. A downdraft bench will pull the air down and through the grid.
Wear ear protection when welding to reduce the noise level. Excess noise can sometimes contribute to headaches.
Wear a comfortable, well-fitted respirator to reduce exposure to the fumes that are produced while welding.