Review Content Smoke Away BioOx Rocks! This must-have enzyme brew, while pricey, has blown away the cigarette odorama from our house in the country. Wife is happy. Dogs are, too. And, needless to say, so am I. I use my air purifier up in my office, only place I smoke anymore, and no ones the wiser theres an older-fashioned gent in residence. This product WORKS, as promised. Enjoy! I buy this product over and over. I have allergies and use the Air Purifier by SG Blue. Bio Ox is necessary for the purifier to do its job.