Smoking cigarettes has long been proven to cause severe lung damage, including chronic obstructive pulmonary disease (COPD), emphysema, and lung cancer. Over time, cigarette smoke destroys lung tissue, fills airways with tar, Dangers of vaping: Public health experts call for surgeon general report AP News 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, Bronchitis Fact Sheets Yale Medicine Bronchiectasis: Causes, Symptoms, Treatment & Prevention Nicotine Vaping Linked to Increased Bronchitis Risk