Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand vape plumes could form lung damaging radicals American Chemical Society Is Secondhand Vape Smoke Bad for You? Baton Rouge General Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record Tobacco Smoke, Vaping, and Asthma AAFA.org