Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Can you get second hand smoke from a vape Is Vaping Marijuana Safe? New York Center for Living Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA