Removing foul (musty) odor from books

I have a few paper hardback (*non-leather*) books which are emitting a foul or musty odor. These were purchased second hand. Any suggestion on how I can  remove  the odor? I came across the suggestion that I could put them in a sealed container with baking soda and that would eventually remove the odor, but after the olive oil experience I thought I had better check here once.