Can i smoke cigarettes every once in awhile without them leaving scars on my teeth?

Just quit: Staining your teeth is the least of the problems that smoking cigarettes causes. Do yourself a favor and just quit for good.

Don't smoke at all: Your concern should be not the stains on your teeth but the possibility of oral cancer with continued smoking.

Why smoke at all: It serves no benefit, only harm. Stains are not only the result of cigarettes -- they can also result form coffee, tea, ... . Best free advice i can give you is to not smoke. Hope this helps.