Sometimes library books get impregnated with cigarette (or other) scents.
I recently saw a desire from a library that would like to have a box to put books in and remove that bad smell.
In that sense, an alternative would be have a chamber to deodorize the books by applying ozone gas on them. Ozone removes scent by destroying the molecules, bacteria, and spores that cause unpleasant smells.
Could not find this kind of chamber specifically for books, but is a good idea!
Found only a prototype, made to remove scent from cigar pipes: http://pipesmagazine.com/forums/topic/diy-ozone-chamber
Small ozone generators can be easily purchased (not expensive) or even built.
(Image source: http://pipesmagazine.com/forums/topic/diy-ozone-chamber)