Google, "smoking cessation drugs and male infertility". There are lots of sites that discuss it. But to answer your question, yes... smoking does hurt his chances of having better sperm and the medicine might.. but at least he'll quit!. Good luck.
Warning
No formatter is installed for the format bbhtml
Smoking does hurt his chances and from what I understand alcohol should be avoided by him as well. After DH saw that it can harm our chances, he definitely cut it out instantly. Thank goodness.
Re: Q about Semen