Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and Does vaping cause lung cancer? UT MD Anderson Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine Secondhand vape plumes could form lung damaging radicals American Chemical Society Ask an Expert Youth Vaping: What You Need to Know Imaging Findings of Vaping Associated Lung Injury AJR