Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand smoke and secondhand aerosol Secondhand Vape Exposure: Effects, Who's at Risk, and More Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Secondhand vape exposure: Risks and side effects Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign.