How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Parents using e cigs expose kids to dangerous secondhand vapor Futurity The risks of vape pens' secondhand aerosols Second hand vape smoke linked to more asthma symptoms in kids Secondhand smoke is harmful. Children exposed to secondhand smoke are at a 50 to 100% higher risk of acute respiratory illness. Say NO TOBACCO! Would you know if your kid was vaping? Michigan Medicine