In secondhand vape, scientists smell risk American Heart Association The Dangers of Secondhand & Thirdhand Smoke Exposure Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand Smoke Tips to Navigate Life with a Smoker Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association