polluting

contagious toxic virulent

communicable contaminating corrupting defiling diseased epidemic infective mephitic miasmic noxious pestilent pestilential poisoning transferable transmittable vitiating

harmless nonpoisonous

antiseptic germless non-infectious uncommunicable uncontagious

abuse corruption deterioration infection

adulteration blight decomposition defilement desecration dirtying foulness impairment impurity misuse profanation rottenness soiling spoliation taint uncleanness vitiation

besmearing besmirching fouling greenhouse effect tainting

sterility

cleanliness purification