Replying to @The Real Skin Nook Glutathione has always had one very obvious problem the smell. That strong sulphur odour comes from the sulphur containing structure within the molecule itself. But Smelly glutathione farts could be explained by gamma glutamyltransferase (GGT)., As mentioned in this video, GGT provides specific bacteria cysteine to make smelly farts. Watch this video to learn One of our products smells like rotten eggs?! It's actually because of an ingredient called Glutathione, which naturally contains Sulfur. But don't let the smell fool you this ingredient will make Amazon.com: Rho Nutrition Liposomal Glutathione Ultra High Absorption Liquid Glutathione Supplement Supports Natural Detoxification, Immune System, Skin Health, Mental Clarity & Overall Well Being : Health & Household