I had that done 40 years ago. It didn't work then, and I doubt it would work any better now! I also tried an acupuncture needle in my ear, which I was supposed to turn whenever I felt the urge to smoke. That didn't work, either.

If your DH has tried all the nicotine-replacement therapies without success (they didn't work for me, either), you might want to consider hypnotism. That was how I finally managed to quit smoking. I haven't even wanted a cigarette since that night. At the most, all I've ever had was a fleeting thought of a cigarette. The thought was so brief that it barely registered with me.