Vaping: What You Should Know Just Think Twice What Are Electronic Cigarettes? NIH News in Health Blown up in smoke: Young adults who vape at greater risk of COVID symptoms Harvard Health Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica Side effects of vaping without nicotine Vaping substantially less harmful than smoking, largest review of its kind finds King's College London