Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand smoke may be a substantial contributor to lead levels found in children and adolescents, new study finds A smoke and vape free environment is one of the simplest ways to help protect your baby's health. Exposure before and after birth can increase the risk of SIDS and other serious health Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals