I was never "into" dope, alcohol was my drug of no choice.
But, after a period of miserable sobriety, my friends convinced me to try a puff or two because they thought I would be btter behaved with dope than booze.
It changed the way I felt and a drink was down my neck in seconds resulting in a nine month bender, geographicals, lost jobs lost friends, lost family, ended up sleeping in the park. So the substitution experimnt did not work out too well for me.
There was more to smoking than I thought too. I finally gave up after about 25 years sober and had an awful time of it. Smoking was my stress reliever, and when I gave up, my anger came out in spades. I used to think that smoking, other than a harmful chemical addiction, did not really have much of a psychological effect. Consequently I would advise newly sober alcoholics no to worry too much about the smokes. I don't do that anymore.