The risks of vape pens' secondhand aerosols Health Effects of Vaping Smoking and Tobacco Use CDC If you vape, you're 4x more likely to start smoking cigarettes. Vaping might be safer than smoking (for smokers), but that doesn't make it safe. New research is changing what we know about vaping. A major study out of UNSW Sydney has found that e cigarettes are likely to cause both lung AND oral cancer, making this