So the book arrived with the smell of smoke.
So that is why items used to be listed on eBay as from a 'smoke free house'.
But I've also heard of books stored on open shelves when the furnace went bad.
My first suggestion was to put the book into a plastic bag, on edge with the pages ruffled, with a box of Arm & Hamer Baking Soda.
Then I used Google to see what was out there [Search: Book repair smoke removal]
The best seemed to be a library, that had a lot of other repair tools on hand, but basically a big tub, with a bag of special stuff in the bottom. Then a milk-crate, with the book inside, on end with pages ruffled. Seal the lid.
https://parkslibrarypreservation.wordpre...nky-books/
This used a sealed bag, and clay kitty litter - suggested time was one month - but if you have the kitty litter?
https://parkslibrarypreservation.wordpre...nky-books/
There was a U-tube, entertaining, but since he sprayed a liquid into a bag & shook the book/liquid and some air freshener up, not going to work here.
So the initial idea of a big dry-cleaner bag & Baking Soda would work...… Except this is a paper back. I suggested using book ends to hold the book upright, but at a slight "open" angle.
I wait to hear what was actually tried and how it is working.