, The notion that vaping causes "popcorn lungs" due to diacetyl in e liquids is based on outdated information.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 A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady What Vape Flavors Contain Diacetyl Vapes Aren't Harmless Even 'flavoured' E cigarettes Contain What Vapes Don't Have Diacetyl Salt 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 Ah yesvaping studies saying they contain diacetyl. : r Vaping