Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Thirdhand Smoke Resource Center Protecting Californians Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy The Impact of E Cigarettes and Asthma: What You Need to Know Secondhand nicotine vaping at home and respiratory symptoms in young adults Thorax The truth about e cigarettes IQAir IQAir USA