L Theanine Vs L Carnitine: Can We Combine Them? Vinatura Supplements Trimethylaminuria, or fish odour syndrome is an uncommon condition that causes an unpleasant, fishy smell. The body is unable to turn a strong smelling chemical called trimethylamine produced in the gut when L Carnitine L Tartrate Powder True Protein L carnitine 300 mg mL Syrup ( L Carnitine ) 30 mL Re3aya Pharmacy Does L carnitine cause fishy body odor? Surprising Truth and Solutions Tonum iSatori Liquid L Carnitine LS3 3000