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 TRUTH ABOUT VAPES! If vapes are supposed to be safe, why do they have toxic chemicals? Breathe in the truth, and learn the realities of what makes up a vape! This year, Which brands contain diacetyl in their vape juices? Knowledge Kaiweili Digital Technology Popcorn Lung: The Deadly Vape Linked Disease Teens Need to Know About Diacetyl & Popcorn Lung EDGE Vaping Just the Facts: Vaping SAFE Project