Secondhand smoke and secondhand aerosol Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC13 Houston What Are the Risks from Secondhand Vape Smoke? NVB Inc. Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Secondhand Smoke Vermont Department of Health