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 Glutathione & NMN Ampoule. Volume: 30 ml. The jar is quite heavy and made of glass. The serum has a clear, gel like consistency. But its scent reminds me of rotten eggs , but that's exactly 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 Glutanex Deo Glow Balm with Glutathione Beauty Glimpse by Maria