Larger detail shops will use an ozinator to clear up that smell. They have the best equipment. It will need to be left with them overnight to get the smell out. It does not always work, and almost always requres a thorough carpet and upholstery shampoo. Best if lots of water and soap is used there.
If that does not clear it up for you, check back and will explain the dash removal bit, not my favorite but can be done. Anything but that smell for me.