I read one previous thread here about this issue. But I do not know how to attach the link, so maybe you can go to the last few pages, it is there.
I am a smoker too... After reading the replies from that thread that I read, I will smoke after I express out the breast milk. And I will not express breast milk within 90mins from my last cigarette.
I also worry that I will affect baby, but I really can't help it cos Im so stressed up from taking care of newborn (first time mummy)... I do feel guilty but I just cannot stop. My intake is about 5 cigarettes a day. You?