Jen, Is your H going 'cold turkey' on the cigarettes? This will only make his 'black' days worse. Try and encourage him to go to a smoking cessation clinic. They are avaiable in several places from GP surgeries to community pharmacies. They can either be in a group session or if that is not for him by himself. He wants a one on one he would be better going to see a pharmacist. Not all offer it but most of the big multiples do. All he has to do is ask. Maybe you could show your willingness to help by finding this info out for him.
Just a thought.
Keep smiling
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15