No matter how clean a car looks, an unpleasant smell ruins the experience. Cigarette smoke, damp upholstery, food, odours cling to fibres and linger long after the source is gone. A good air freshener or odour product neutralises the smell and adds something pleasant.

There is a difference between masking a smell and actually dealing with it. Sprays and gels that only contain fragrance cover the problem temporarily. Products with odour-neutralising technology break down the odour molecules, that's a lasting fix.