Why Vaping is Dangerous, Especially for Children with Asthma The National Environmental Education Foundation (NEEF) Smoking, vaping & pregnancy: in pictures Raising Children Network Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center CU Anschutz Study Shows Vaping Nicotine While Pregnant May Impact Fetal Development Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times