Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC In secondhand vape, scientists smell risk American Heart Association Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY What you need to know about vaping to keep children safe Boston Children's Answers Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Juul study shows secondhand vaping emissions are less toxic than cigarette smoke