We bought a used Suburban a few months ago. It smelled so bad like cigarette smoke it was like rolling around in an ash tray. We did everything to try to clean it and air it out nothing worked. I decided to call Rj's Carpet & Upholstery Cleaning to see if they could clean the carpet and the seats. They recommended their Just Gone service that is specifically for odor removal. It worked so well I was very happy. I can't smell the cigarette smoke at all now. Also it didn't smell like harsh chemicals or perfumes. It is mostly just clean and odorless. Very worth it.