Went over to a friend's house two weeks ago and my wife brought some delicious potatoes au gratin. As you know, these sit in a creamy milk-based "sauce". I thought I would be clever by just keeping in in the cargo department (see pic) because the lid was closed. When I arrived, it had spilt. Ugh. I tried to clean it up as good as possible and drenched the area in carpet cleaner, then put a fan on it overnight. I can still smell it a bit when I put my nose about half a meter from the carpet though. Any ideas?