Of all the stop smoking aids that have been marketed throughout the years, the most intriguing, and possibly most effective, is the electronic cigarette (also known as the e-cigarette or smokeless cigarette). At first glance, this device appears to be a real cigarette in size, weight, and usage. However, since it does not contain tobacco, its operation does not expose the smoker to the over 4000 toxic chemicals and 60-70 known carcinogens found in traditional cigarettes.