National Emphysema Foundation E cigarettes are Poor Substitutes for Conventional Smoking in COPD Patients 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. Marijuana and Your Lungs: Is Vaping Safe for People with COPD? The Long term Effects of Vaping on Pulmonary Function RT