We use Scented Air in our hotel to create a certain smell and a certain ambiance. People seem to like it and it is used company-wide. It all varies on where the hotel is in the city and that determines what "scent" your hotel gets. Some that we use are Urban Hotel and Suburban Hotel. I know we have more but I don't know what they are.
They created one for a museum that had a dinosaur roaring out towards people. The name of that scent...you guessed it..."Dinosaur Breath." Read more about the museum and the bad breath at the link.
Ah the things companies and the hospitality industry uses now to create a perfect little haven for our guests. A smart business mind is truly at work.