I am another EX-smoker here (15 years this past Jan1st)
I wanna chime in too and say don't do it please because it won't just be one a day. It will go to two a day then three then four.
You had major surgery don't do it because you are healing inside still and will be for a long time and you don't need all those toxins (in the thousands!) circulating around inside of you while you are trying to heal.
Also as an exsmoker I also know that there is a very good chance that you already smoked that cigarette you are craving when you posted and if you did then you need to stop right now because the longer you smoke the harder it will be to stop again.
I didn't stop craving smoke for months but I fought the feeling and BOY am I glad I did! It was one of the smartest things I ever did in my life. After about 6 months of not smoking my lungs felt so good and my taste came back.
I will never ever EVER smoke again!
You don't need that cigarette you are just craving the nicotine. Resist it! You will be SO glad you did further down the line!
Besides MY GOD $5.00 a pack that is outrageous! When I quit it was a dollar a pack and I thought THAT was too high! LOL!
Fight it! You don't need that smoke!!!