COPD, or not COPD : r COPD Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Association of electronic cigarette use and risk of COPD: a systematic review and meta analysis npj Primary Care Respiratory Medicine In the midst of the pandemic, smoking vaping cessation is even more important. But it is also important to know that not all patients who develop COPD have a history of smoking.