I hadn't actually checked, but I just took a whiff, and my Pathfinder books smell okay (although, after reading your description, I definitely seem to be picking up a faint 'burnt rubber' scent, now that you mention it!). Still, I had to shove my face into the giant's spiders unmentionables to notice it...
I do have an assortment of RPG books that smelled terrible when I got them (many black and white White Wolf books printed in Canada smelled truly nasty, although I have no idea if it was because they used so much black ink as a result of their generally dark-themed artwork or what), but I haven't noticed any 'stinky books' in several years, from them or anyone else.
Of the three or four random books within reach of my computer, the only one that had a distinctive odor was a Mongoose Encylopedia Arcane book (very sharp odor, not foul, just surprising).