I love my DH Lifelabs - Sciaire Essential Air Purifier. It's wifi enabled and can connect with your tablet or phone via the DH Lifelabs App. Naturally deodorizes any room up to 214 feet squared.  I like to use this in the living room near the diaper pail and have also stuck it in my oldest son's room to get rid of the "feet" smell. It is also supposed to remove 99.9% of bacteria, viruses, allergens, and airborne pollutants.