Contrary to popular belief, vapes contain more than just harmless flavored water. According to the Centers for Disease Control and Prevention (CDC), vapes are filled with nicotine, heavy metals (like lead), and Vaping Patients May Be Prone to Relapse, C.D.C. Warns The New York Times Pediatric Ventilator Associated Pneumonia (VAP) Prevention Bundle: 5 Years Later American Journal of Infection Control E Cigarette Use Among Youth Smoking and Tobacco Use CDC