Make something difficult enough to do and people -- some people anyway -- wont think its worth the trouble

In 2011, the FDAs Advisory Committee concluded that the Removal of menthol cigarettes from the marketplace would benefit public health in the United States. Though Canada, the European Union, Ethiopia, and other countries have taken menthol off the market, the United States has yet to do so, despite overwhelming evidence collected by the FDA that a menthol ban would benefit public health. The CDC notes, Menthol in cigarettes creates a cooling sensation in the throat and airways when the user inhales, making cigarette smoke feel less harsh on the user. So its not surprising that studies have shown that menthol in cigarettes likely leads peopleespecially young peopleto experiment with smoking. Target marketing Moreover, there also is heavy marketing by tobacco companies in African American neighborhoods, magazines that are popular with African Americans, and at music and lifestyle events aimed at African Americans. Nearly 9 in 10 black Americans smoke menthol cigarettes, compared with less than a quarter of white Americans

And the true cig-a-like look and feel of the V2 EX e-cigs can be more satisfying for you (you cant hold this device between your fingers like a true cigarette for example)
What remains is a carbon-rich, but still relatively porous, basic structure
However independent testing commissioned by the ACCC identified the presence of carcinogens and toxic chemicals, such as formaldehyde, acetaldehyde and acrolein in the products of Joystick, Social-Lites and Elusion, as well as acetone in Social-Lites products