This filter not only prevents odors from being sucked in and dispersed throughout the house, it really does eliminate odors and make my home smelling much better. I'm using cheap ones that my landlord gave me now and they do nothing compared to these. I purchased these because my landlord was supposed to supply them and didn't for a while. Now that I'm using the cheap ones, I really noticed the quality of this one which I used before the cheap ones. Will definitely be switching back!