What's In Your Vape Juice? E Liquid Ingredients Explained EDGE Vaping , The notion that vaping causes "popcorn lungs" due to diacetyl in e liquids is based on outdated information. , ., While diacetyl was once used as a flavoring agent in some e liquids and linked to They may seem sweet and tasty, but each time you vape, you breathe in harmful chemicals. One of these chemicals is diacetyl, used in popcorn flavourings for its buttery taste. When eaten, Diacetyl In Vape: What You Need To Know Shisha Vibe worried about the Popcorn Lung diacetyl rumour (please read) Vaping Forum Planet of the Vapes Which E Juices Have Diacetyl? VanGo Vapes