Sound isn't louder than a cheap oscillating fan, and the actually works in all kind of spaces/smells!
This thing works.  I have used it multiple places in the last few weeks- I've put it in my child's room which never seems to have fresh air and smells dusty (I think we need an a/c scoop installed in ducts to help air get up there), and it cleared out the dusty smell in 24 hours.  I was really surprised to walk in there and smell a distinctly CLEAN smell, lack of smells.  I put it in a bathroom when we got a new shower curtain and the new shower curtain smell was gone in 8 hours.  I now have it in a room we don't use much to completely freshen it before a visitor comes.  It had a bunch of chemicals stored in the heat in there and it's pretty bad but I have high hopes it will make it all good.  The downside is that it's expensive and I would love to have more!  It also takes quite a while to do its work in larger rooms.  I think it will take a few days to help the chemical hot room because of it's size and the issues in it.  I have found that turning on a ceiling fan helps a lot.  The upside is it's extremely easy to move around and it's not all that loud, no louder than an oscillating fan or something similar.
Rating: 5 stars