Questions that Google can answer but I will still ask it here for the sake of our little cult

What's the scientific explanation behind the pleasure from smoking after a meal?

I feel like I could've quit for years and still have that out of breathe feeling urging for me to smoke.

Like is this thing permanent effect am I going to suffer every time I finished a meal?

Extra : I could use the help for hot drinks to help the urge to hurt my esophagus but still