I told my wife I ordered a diffuser oil called "Ghostly Castle", and it is supposed to smell like a haunted castle with musty carpets. I think she was grossed out at the thought of that! I was still a believer that it would be good. Then I received it and turned it on in my office, and she now agrees, it's the best one I have! It kind of reminds me of a library with some sweet earthy and grassy smells thrown in and also with a little spice. I wish I could describe the smell a little better because it's pretty complex. I can't totally nail it. However, I can honestly say it smells fantastic though! I will buy it again once I run out.