Ans: Rust is the oxidation of the iron metal. While it is not toxic if it accidentally mixes in your food in very tiny amounts, it is always safer to be rust free as large flakes may end up causing injury to intestines or mouth etc., You can remove the rust of the smoker with proper oiling, painting, and other such techniques and then later, seasoning it before using it again. Proper regular maintenance is required to prevent rust from forming on your grill