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 Customer reviews for Nutricost L Carnitine Tartrate Supplement Powder (100 Grams) 1 Gram per Serving; 100 Servings Walmart.com Why Does L Carnitine Smell Like Fish TikTok Maximum Acetyl L Carnitine Powder formula 200g Unflavored Alfa Vitamins Store L Carnitine: Everything You Need to Know Does Carnitine Cause Body Odor? Lume Deodorant