Unlike nicotine gum or the nicotine patch, the e-cigarette actually functions much like a regular cigarette. However rather than burning and smoking, it vaporizes. Instead of smoking it is e-smoking. The nicotine is still delivered to the lungs, but in vapor form, rather than smoke which contains carcinogens and tar. E-Smoke is actually not smoking at all, but rather vaping. Below is a diagram showing the various parts of the e-cigarette.