Vaping: what we know and what we don't about e cigarettes Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals 5 ways that vaping can damage your body Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Vaping: not a safe alternative to smoking, new study suggests, and it may be more harmful to health than tobacco in normal cigarettes South China Morning Post Should I Be Concerned About Secondhand Vaping?