Stabilizing the enzyme in fish odor syndrome L carnitine supplements can cause a fishy odor in the breath, sweat, and urine. This is likely due to the formation of trimethylamine (TMA). TMA is also responsible for the pungent smell of L Carnitine500, 500 mg, 120 Capsules Ultra L carnitine making me reek of rotting fish for 48 hours #lcarnitine #fishy #smell #trauma #fyp L carnitine 300 mg mL Syrup ( L Carnitine ) 30 mL Re3aya Pharmacy Does Carnitine Cause Body Odor? Lume Deodorant