Popcorn lung how vaping can scar your lungs for life RCSI University of Medicine and Health Sciences Health officials investigating dangers of vaping, verifying danger Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department 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 Is Popcorn Lung Caused By Vaping? What Does Vaping Do to Your Lungs? Johns Hopkins Medicine