Well, I don't breathe in the dust when I make it, but I don't wear a mask or gloves either. Most of debris from filing and drilling is not so fine as to become airborne. When I do sand I almost always wet sand, and that contains the dust very effectively. The smell has never bothered me. But then I love the smell of new tires too. This one is not too strong smelling. Starter and PM kits from several years ago are much more pungent.