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, Vaping or Smoking Which is More Dangerous for your Lungs? CritiCare Hospital Smoking and Vaping: How They Damage Your Lungs Over Time Max Hospital Learn the truth: vapes are not safe smoking alternatives The Mysterious Vaping Illness That's 'Becoming an Epidemic' The New York Times