Understanding Popcorn Lung and Diacetyl: Risks and Prevention Vapestore Blog A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady 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: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes