At the library, Amtsbókasafnið

I had to return a few magazines at the local library today and this is what greeted me when I entered. 
Always my favourite place in town, although today it was very strange to walk up to the second floor. The air was much too warm and kind of stuffy...weird...I thought there had to be a very controlled heating and airing conditions where books are stored? You think I should let them know something is wrong?