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 smoke Public Health County of Santa Clara Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Secondhand Smoke infographics VitalSigns CDC Juul study shows secondhand vaping emissions are less toxic than cigarette smoke