I was positive there's an actual name for the smell you're talking about, but google is failing me at the moment. Anyways, he's a little explanation about it
http://www.thenakedscientists.com/HT...question/1860/
And you're not alone in loving the smell either, you can buy it in perfume form here
http://www.cbihateperfume.com/in-the-library.html
(I'm a perfume nerd, sorry
)