What does L Carnitine taste like? (L Carnitine) L Carnitine for Fat Loss: The Science Backed Secret to Shredding Safely L Carnitine (Orange) Outlastlabz 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 Acetyl L Carnitine: Benefits and Side Effects Gene Food