While vaping is not risk free, it is less harmful than tobacco Our World in Data Tobacco Smoke, Vaping, and Asthma AAFA.org Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Vaping not only exposes young people to toxic and cancer causing chemicals, it can also have harmful effects on mental health. Our new report found that youth and young adults who vape experience Thirdhand Smoke Resource Center Protecting Californians Can Vaping Cause a Headache?