Amazon.com: Ronnie Coleman Signature Series L Carnitine XS 3000 Liquid, Amino Acids Metabolism and Lean Muscle Strength Support, Stimulant Free, Sugar Free, Zero Carbs, Blue Razz, 16 Oz : Health & Household What does the smell of your urine tell you?? 12 Urine Smells What Do They Really Mean? Your urine can tell you a lot about what's happening inside your body. Changes in smell are often harmless, but sometimes Trimethylaminuria (Fish Odor Syndrome or TMAU)