Steel wool is generally much much finer and more ductile than the bristles on a stiff steel brush. Steel wool is just a thousandth of an inch across so it's tot

Steel wool is generally much much finer and more ductile than the bristles on a stiff steel brush. Steel wool is just a thousandth of an inch across so it's totally fine to consume a few fibers so long as it's not the extra course stuff. Even then it wouldn't be as bad as a bristle off a steel brush.