How Long Do You Stay High After Hitting A Pen Is Vaping Marijuana Safer Than Smoking? Many young people who vape did not smoke cigarettes before they started vaping. But young people who vape are more likely to start smoking cigarettes than those who never vape. For help How Does a Vape Pen Work A Guide to Vaping Technology What Is Vaping and Why Is It Risky? Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA