Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Tobacco Smoke, Vaping, and Asthma AAFA.org Social Media Just Breathe Indiana Can You Get Secondhand Smoke from Vaping? Understanding the Risks