A bit late but it might help someone when they do a search on the same subject.
The "Odour Filter" that's what Ford call it, is under the side panel on the "tunnel" drivers side. Undo one torx screw and pull the cover off. Then undo 3 more torx screws and remove the small panel nearest the front. Pull the old one out, shove the new one in, bending and squashing it as required. It will spring back to shape.
Hi Ian, yes I was in the RAF in the fifties, but I had nothing to do with Aircraft, I was a cook, that is why I am Jackkook, from RAF sites, it takes hundreds of men women in the RAF to keep one Aircraft flying.