Had to look it up. That claim is truish. However it is only a risk while seasoning and if you are inhaling the fumes. Needless to say, don't do that and cast

Had to look it up. That claim is truish. However it is only a risk while seasoning and if you are inhaling the fumes. Needless to say, don't do that and cast iron presents no risks. At the end of the day, a really silly reason to swear off cast iron.