“…Few other agents that are potentially ototoxic include propylene glycol (a common combination of ear drops), methyl mercury, potassium bromate, industrial solvents (styrene and toluene), propranolol, propyl thiouracil, bleomycin, nitrogen mustard, carbon monoxide, tetanus antitoxin, gold, lead, arsenic, alcohol, nicotine, caffeine, and Marijuana [17].…”