Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis Marijuana and THC Detector Most people switch to dry herb vaping for one reason but stay for another., Heres the real lesson:, Combustion = smoke, lingering odor, and byproducts you may not want, Vaporization = 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 Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center