Research is still evolving, but evidence continues to point to a link between smoking and breast cancer risk. From firsthand and secondhand smoke to vaping and cannabis, here's what scientists knowand what 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 What Chemicals Are Present in Secondhand Vape Emissions? Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure How safe is vaping? UCLA Can you get second hand smoke from a vape