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 How secondhand smoke, thirdhand smoke & vaping affects kids Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand vape exposure: Risks and side effects E Cigarettes (Vapes) Smoking and Tobacco Use CDC Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association