Can Acetyl L Carnitine Help Clear Brain Fog and Fatigue in Long COVID and ME CFS? RTHM Taking chlorophyll supplements to reduce body odor has become a trend but do they really improve health? , There is no evidence they do. Our experts recommend getting chlorophyll from eating whole Trimethylaminuria: Understanding and Treating Fish Odor Syndrome 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.