Everything you recognize is Rowling's. I'm just jumping her fence and swimming in her pool.
Hermione sat in the library with her nose deep in a book. She wasn't actually reading the book, but inhaling it. She had read Hogwarts: A History several times, over and over again, but the smell of it was her favourite part. She could smell the history, the potential of the students, the secrets of the school, and the strength of the community, as well as a healthy accumulation of dust as the book got older and older. She didn't go around sniffing books often, and she wasn't really even aware that she was practically kissing the old tome. Harry and Ron turned around a corner to see Hermione sitting at the work table, eyes closed and breathing deeply and they both burst into laughter. She jumped like a cat and slammed the book close, narrowly avoiding smushing her nose between the pages, turning a very obvious shade of red.