Ah yesvaping studies saying they contain diacetyl. : r Vaping 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 Vaping, Diacetyl, and Popcorn Lung: Is the Threat Real? Vaping360 Risk assessment of inhaled diacetyl from electronic cigarette use among teens and adults ScienceDirect DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs.