Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand smoke is harmful to those around you, putting them at risk for serious health issues. Protect your loved ones from the dangers of secondhand smoke by getting started with 802 Quits Secondhand vape exposure: Risks and side effects Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand Smoke Vermont Department of Health