L Carnitine for Weight Loss: How It Works, Dosage & Best Supplement Zeelab Pharmacy L Carnitine for Dogs: Key Benefits that Every Pet Parent Must Know! 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 Carnitine L Tartrate Powder True Protein Does L carnitine cause fishy body odor? Surprising Truth and Solutions Tonum Will this make you smell like fish?! Pcos