Understanding Popcorn Lung and Diacetyl: Risks and Prevention Vapestore Blog 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 2FIRSTS E Cigs in Malaysia: Diacetyl Exceeds by 2 Times, Heavy Metal Levels Meet Chinese Standards Risk assessment of inhaled diacetyl from electronic cigarette use among teens and adults ScienceDirect