- BiOWiSH® Odor works rapidly to eliminate odors at their molecular source by bio-chemically altering the pathways of decomposition and accelerating the natural degradation process. BiOWiSH® Odor uses a dual action process on odor causing molecules, degrading the substrates at the source, and causing decomposition in their gaseous state. As the enzymes come into contact with the volatile organic compounds (VOCs), they react biochemically and breakdown VOCs into their final, inert, odorless compounds.