I checked it this morning when I got up for fragrance. The lights had only been on for half an hour and it was very fragrant. I can't quite describe it, but it reminded me of a juicy, tropical fruit (maybe guava or passion fruit?). It was a very pleasing fragrance. I checked a couple hours later and no fragrance. Is it possible that it's night time fragrant? I thought they were suppose to be day fragrant.