Secondhand vaping may pose risk to your kids: New study SHARE: If you smoke or vape in your car in the presence of others especially children you're exposing them to harmful secondhand smoke or aerosol. Cracking windows is NOT enough, Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association