Vaping Nicotine Impairs Airway Clearance RT COPD Symptoms and causes Mayo Clinic The Role of Smoking in Asthma and Chronic Obstructive Pulmonary Disease Overlap Immunology and Allergy Clinics A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products, Gender, tobacco and chronic obstructive pulmonary disease: analysis of the 2020 National Health Interview Survey BMJ Open Respiratory Research