That certain smell you sense from purchasing a new book. New book smells usually come from the woodsy pulp of the paper.

I would describe it to smell like a bitter fireplace. The smell is usually very satisfying to avid book readers (especially me)

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.