Toxic Thirdhand Smoke Residue Reaches Many Children Even in Nonsmoking Homes Research Horizons Second hand vape smoke linked to more asthma symptoms in kids Secondhand smoke may be a substantial contributor to lead levels found in children and adolescents, new study finds From flavor bans to secondhand aerosol exposure, there's a lot people don't realize about how vaping impacts health, policy, and safety. Flavor restrictions can change tobacco use patterns, influence black market