E Cigs and Second Hand Vaping: Dangers and Protections Parents using e cigs expose kids to dangerous secondhand vapor Futurity Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand Smoke vs Vape: What the Science Says Secondhand smoke and vape can trigger your child's asthma attacks. Smoking and vaping are unhealthy for everyone but especially harmful for people with asthma. Whether at home, in the car, or Secondhand vaping may pose risk to your kids: New study