2FIRSTS E Cigs in Malaysia: Diacetyl Exceeds by 2 Times, Heavy Metal Levels Meet Chinese Standards Understanding the Dangers of Vaping: Popcorn Lung and Diacetyl Risks E cigarette and food flavoring diacetyl alters airway cell morphology, inflammatory and antiviral response, and susceptibility to SARS CoV 2 Cell Death Discovery Doctors just announced that vaping has been conclusively linked to permanent lung disease. And sadly, many teens have already been diagnosed. learn more https: theconversation.com popcorn lung how vaping could scar your lungs for life 254414