Diacetyl notice! : r Vaping , The notion that vaping causes "popcorn lungs" due to diacetyl in e liquids is based on outdated information.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 Fruit flavored vapes just cleared a major hurdle with the FDA. The Food and Drug Administration authorizing the marketing of fruit flavored e cigarettes, marking the first time it has approved this category of vaping Flavors that contain diacetyl according to OSHA (OSHA, 2010). Download Table