Vaping, Second Hand Smoke, and Kids Medical Associates of Northwest Arkansas What Is Secondhand Smoke? Healthy Delaware Secondhand smoke may be a substantial contributor to lead levels found in children and adolescents, new study finds In Maine, it is illegal to smoke or vape when a child is in the vehicle with you. Keep your loved ones safe from the harms of secondhand smoke and vape aerosol Secondhand smoke and secondhand aerosol