Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Secondhand vape plumes could form lung damaging radicals American Chemical Society How secondhand smoke, thirdhand smoke & vaping affects kids Why Vaping is Dangerous, Especially for Children with Asthma The National Environmental Education Foundation (NEEF)