What is the owful odor at the new library?

Does anyone know what the awful smell is at the new library? I have asked a clerk, but she didn’t know. It seems to be getting worse, and after visiting the library yesterday, I fought a headache until the evening. finally got rid of it, and sat down and opened my library book, only to get assaulted by the odor yet again. Apparently the odor has permeated the books.