"noxious substances" in German noxious substances Schadstoffe Schmutzstoffe Detailed translations for "noxious substances" noxious substances noxious substances(also: harmful substances, polluting agents, pollutants, contaminants) Schadstoffe{masculine plural} noxious substances(also: harmful substances, polluting agents, pollutants, contaminants) Schmutzstoffe{masculine plural}