It's important to protect children from cigarette smoke, and it's just as important to do the same with vaping. Secondhand vape smoke aerosol isn't harmless It contains tiny particles that can If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. How secondhand smoke, thirdhand smoke & vaping affects kids Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA