Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Tobacco Smoke, Vaping, and Asthma AAFA.org Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center