"noxious substance" in German noxious substance Schadstoff Schmutzstoff Detailed translations for "noxious substance" noxious substance noxious substance(also: harmful substance, polluting agent, pollutant, contaminant) der Schadstoff{masculine} noxious substance(also: harmful substance, polluting agent, pollutant, contaminant) der Schmutzstoff{masculine}