How do you get pet odor out of upholstery?

My dad gave me his living room set which I LOVE. Its an oversized chenille couch set - amazing! Anyways, he had a german shepard that he let just hang out on the sofa. By the time I got the sofa, it reeked of dog! I decided to get it professionally cleaned but when it was all said and done, it was cleaner but still stinky. I tried febreeze and then tried the pet odor febreeze and nothing has worked... any suggestions? Im really sad about it!