I once retrieved a returned book from the book drop and the whole thing smelled like it was doused in gasoline. Thank goodness there is no smoking allowed in the library. The whole place would have erupted if someone struck a match.
Did someone save it from a trash pile and decided to turn it in?
When I called the last known patron to let them know that the book was damaged and beyond repair and that they would have to pay for a replacement copy the woman refused to acknowledge her misdeeds and insisted that she only used her 'gas card' as a bookmark.