, The notion that vaping causes "popcorn lungs" due to diacetyl in e liquids is based on outdated information.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 What Is Vape Juice Made Of? UK Ingredients Explained Ecigone Which E Juices Have Diacetyl? VanGo Vapes Truth Behind Vaping and Popcorn Lung Foger Switch Flavors Which Vapes Dont Have Diacetyl? Clear Vape Facts Australia Do Foger Vapes Contain Diacetyl Potassium