I hope you were doing that out side . The gas coming off the weld process is VERY UNHEALTHY . You need sand/grind the Galv'ie off before welding . The wire has to burn through the Glav'ie before it will start weld process . Don't use Brake clean ether , there is whole write up on how bad B/Clean's burn off gasing . Believe it or not Alcohol or windex is best . When a Mig/with gas bottle is set right it produces very strong/nice welds . There is no other way to get good at welding but for practice practice practice .