Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source