How do you remove the smell of cigarette smoke from books?

Airing them out usually does the trick for me, but try some of these sites for some great ideas: http://www.bookologist.com/cab/abu/y203/m10/bk0013/s03 http://www.mail-archive.com/ctls-l@ctls.net/msg06036.html http://weblogs.bibliobox.com/BookFaerie/?p=43 http://www.bookcrossing.com/articles/2489/Odor-Removal-Tips-For-Smelly-Books-