I heard that air fresheners as well as just masking the smell also in some cases numb your sense of smell kind of like an anesthetic.
What Happens To The Odours When You Use An Air Freshener?
In the U.S. we have some that claim to remove the odor...magically...lol...they do work!....♥Nassy
With air freshener there is the absorption where absorbents like activated charcoal or silica may be used to absorb offending chemical odors.