I just used a turtle wax bomb in my daughters PT Cruiser that I'm selling. She was a smoker and liked leaving her fast food trash in the car, sometimes for weeks. Smelled awful! started the car, turned on the ventilation in recirc mode and set off the bomb. left it run for 15 minutes. The results were incredible, couldn't tell anybody had ever smoked in it and the rotten food smell disappeared. You might try that first, Think it cost me less than $10