my 17months baby ate play doh and on wikipedia it says while its 2004 United States patent indicates it is composed of water, a starch-based binder, a retrogradation inhibitor, salt, lubricant, surfactant, preservative, hardener, humectant, fragrance, and color.[9] A petroleum additive gives the compound a smooth feel, and borax prevents mold from developing.[3] could those chemicals kill my baby