Unlike most most air purifiers that collect airborne contaminants in their expensive filters or ionic ones that produce harmful ozone levels, the NanoBreeze - Filterless Nanotechnology Air Purifier is a literal breath of fresh air because it destroys viruses, bacteria, mold spores, pollen and more, removes odors and dissolves toxic vapors and gases from the air on the spot using nanotechnology. Plus it's a great 3-speed fan as well! So, if you are going to run a fan that circulates air, it might as well eliminate all these unwanted air impurities as well. (via The Green Head)