Is Smoking One Cigarette Daily Safe?

I am 30 years old.I have been a smoker for 5 years and stopped smoking completely for a month now. Is it safe to have 1 cigarette per week? I get intense craving sometime and don't want to go to a full time smoker again. If I will have once in a week it will help keep my mind psychologically satisfied that I am not totally away from the pleasure.