Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Secondhand Smoke "Family" Maine Prevention Store E Cigarettes (Vapes) Smoking and Tobacco Use CDC How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Secondhand vape exposure: Risks and side effects Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN