E cigarettes didn't help smokers quit, study says CNN Vaping is not replacing smoking. It is often added to it. This is called dual use. Nearly half of e cigarette users still smoke cigarettes. What this means: Smoking continues alongside vaping Nicotine ECigarettes Help Smokers Quit Review Concludes Powers Health Major Study Says E Cigarettes Can Help Smokers Quit E Cigarettes and Vaping PPAC Central