Secondhand vape exposure: Risks and side effects Juul study shows secondhand vaping emissions are less toxic than cigarette smoke 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 e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN