Frontiers Diacetyl and Other Ketones in e Cigarette Aerosols: Some Important Sources and Contributing Factors What is Popcorn Lung? Popcorn Lung is a serious, permanent lung disease caused by inhaling harmful chemicals like diacetyl, sometimes found in flavored vapes. Tips for Parents & Caregivers: Talk Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady Diacetyl in Vape Juice: The Facts We Know Pod Salt UK All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center