Removing odors in houses is completely necessary, solely because pet, cooking, tobacco smoke, moisture, body and mold odors will build up over time and create a horrible, unpleasant smell as time goes by. These odors will not only linger in the air, but will also linger in crevices, cabinets, walls, ceilings, the carpet or hardwood, the drapes, clothing, furniture, closets, the kitchen and just about anywhere and everywhere. When it comes to ridding odors out of houses, the Bio3Blaster ozone generator unit does the job best.