pen cigarettes No Smoking Cigarette Pencil What dangers lurk in e-cigarettes

Culture Club/Getty Images An advertisement for Bachelor cigarettes invites the audience to sample their "individual charm and delightful character." Mary Evans/National Magazines/Everett Collection An advertisement for Our Little Beauties cigarettes, near the turn of the 20th century

The electronic cigarette is composed of a cigarette rod, an atomizer and a battery

Walk around a bit before you have to be around people, or drive with the windows down to get the smell out naturally

The process begins with the internal battery, which powers the device and activates the heating element, commonly referred to as the coil or atomizer

Several brands of both loose and pre-rolled tobacco market themselves on transparency and minimal processing