As a groomer I second the suggestions about trying douche, or a combination of dawn, baking soda & peroxide. You don't want to use anything that has amonia in it as it can make it worse or tomato juice. The longer the odor stays in the more difficult it will be to get out and the less chance there is of getting it out, many times it will smell good when it is dry but as soon as it gets damp (even a humid day) you will notice the odor.
With that said, I realize the time and work it would take to redo an area but that's what I would try to do. I wouldn't be comfortable giving anything that might have an odor because you don't know if anyone else could be allergic to that odor. I can handle the smell of a dirty dog but perfumes, cleaning solutions, chemicals & that sort of thing make me sick.