I feel your pain. Our dog barfed in the back or our Subaru after eating some rotting veggies in our garden.
Several months, lots of cleaning and even removal of the carpet that was barfed upon, and it still smells.
My wife had a kid barf up ice cream on a hot day in her back seat. I had a couple of friends that owned a ServiceMaster cleaning service.
She drove by there and they sprayed some cleaner on it and did hot water extraction on the upholstery. Car never stank and all the seats looked way better than before. They felt sorry for her so they didn't even charge us!
