Air fresheners just cover the original odor, so in best case it works more or less for a limited time, but often it just gives an awful mix of odors.
There are some spray products that really remove odors from seats etc. (product itself is odor-less), and work already much better for cases like that. We used that in a car, not sure which one (either the Renault 11 bought second-hand, or a renting motorhome... it is too far away in my memory)