I have been using the Conair Pure Medium Room Air Purifier in my living room for 2 days and I can already tell a difference in the odor. I had a musty smell that is now gone. 
The air purifier has 3 settings which is a nice feature. The design is sleek and will fit into just about any decor. It's extremely quiet and does not interfere with the tv or sleeping. 
I have already recommended this to friend that suffers from allergies.