The Hejduk Odor Absorber odor neutralizer was not created to cover odors, but to destroy them by breaking down (dissociating) odor molecules, then packaging them (isolating them, binding them to molecules) to prevent them from continuing to permeate the space and breaking them down completely. Once the odour molecules have been broken down, a pleasant "unidentifiable" stable fragrance sets in, giving a clean feeling with excellent long term efficacy.