The medium for e-cigarettes is propylene glycol with nicotine. (There is also a vegetable alternative for people who have sensitivity to PG.) Allegedly inhaling

The medium for e-cigarettes is propylene glycol with nicotine. (There is also a vegetable alternative for people who have sensitivity to PG.) Allegedly inhaling PG doesn't have significant effects on the body. I recently started smoking ("vaping") e-cigarettes, and while I haven't seen any immediate improvements to my health, a) I smell a helluvalot better, and b) I'm not putting carbonized paper and plant fibers (along with all the other flavorings and chemicals used in the tobacco production process) into my lungs. And yes, they cost a lot less. Here in CA a pack costs about $5 and I know in NY it's over $9. An e-cigarette cartridge (equivalent to a pack) costs about $2.