No it wouldn't change anything because people that smoke will just go find a store that sells them. Smoking cigarettes is mainly the #1 cause of cancer & Premature babies. Smoking during a pregnancy will mess up your baby's health, including your own, another reason you shouldn't smoke is because if you smoke more than likely your teeth will get rotten, you will get cancer & your lungs will turn black. In other words instead of smoking you could go hang out with friends, go jogging, or go for a few rounds with the family..So Be Smoke Free! :)