If he's smoking so few cigarettes a day, he'll probably give it up anyhow. I knew someone who was down to 1/2 cigarette a day and I said "Hardly seems worth it now" and she said that brief sentence made so much sense to her and that's what pushed her over the edge to quit. This reminds me of the comedy movie "Cold Turkey" where if an entire town gave up smoking, they'd get millions of dollars. One last hold-out was a surgeon who was stressed to the max because he hadn't been smoking and was going through withdrawal; he was ready to operate on someone and the patient yelled "For God's sake, let him smoke!"