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, Frontiers The new nicotine epidemic: understanding the systemic harms of e cigarettes in the adolescent population Vaping' Increases Odds of Asthma and COPD Johns Hopkins Medicine How to Detox Lungs from Vaping: A Smoker's Guide Vaping associated constrictive bronchiolitis ScienceDirect What are the symptoms of vaping illness? Doctors warn about e cigarettes