Dryer sheets a good idea, but chances are good it's toast unless you want to invest in a recovery process that costs a lot more than the book is worth. We had a fire at the library and even though the collection wasn't burned, the smoke saturation was incredible. It took months of putting them in special ozone chambers to get them to the point where the public could use them, and the smell never went away entirely. Cigarette smoke is even worse, imo.
Yeah, if you look at my post above that one I agree it's nearly hopeless. He might be able to get it to a more tolerable level of odor is all. Like I said, I would have returned it. Passing off smoky books is a real no-no for booksellers.
Many amazing book collections have been made into junk by being stored in a smoke-filled room.