Tobacco Smoke, Vaping, and Asthma AAFA.org About one in four adults in California report being exposed to secondhand smoke or vape in the past two weeksoften on sidewalks, at home, and in recreational spaces like parks and beaches. Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice