Has your car lost that "New Car" smell? Meguiar's ReFresher technology not only removes unwanted odours wherever they hide, but also replaces odours with a pleasant new car scent that lasts for weeks. * The molecular odour eliminating chemistry works great at permanently removing smells like cigarette smoke, wet dog, work-out gear, and more. *Meguiar's ReFresher technology permanently removes existing bad odours through chemical bonding at a molecular level.