The Impact of E Cigarettes and Asthma: What You Need to Know How Second hand Smoking Affects Pets Thirdhand Smoke Resource Center Protecting Californians Vaping vs Smoking: Effects and Tips for Protecting Your Lungs Max Hospital Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN