Carnitine: the claims and why it may not work Will this make you smell like fish?! Pcos Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish. L Carnitine for Weight Loss: How It Works, Dosage & Best Supplement Zeelab Pharmacy What's the Difference Between CLA and Carnitine? L carnitine: Science Backed Benefits, Risks, and More