Yes you can almost always get the smoke smell out of a couch using some vinegar and water or baking soda.
A good home remedy for getting smoke smell out of couches and fabric and fabric furniture is to mix some white vinegar with some water in a spray bottle.
Mix two parts of water with one part of vinegar in a spray bottle and shake it up to mix it together and then spray the fabric furniture with the vinegar and water and let it sit for awhile.
Then after it dries you should use vinegar and water again in an upholstery cleaning machine and deep clean the fabric furniture which will help pull out the odor of the smoke from the fabric furniture.
You can also sprinkle baking soda onto the furniture to help absorb the smoke odor and then use the upholstery cleaning machine again on the fabric furniture.
Another option is to buy some fabric refresher cleaning spray that you spray onto the fabric and it will help neutralize the smoke odor from the furniture.
Febreeze or Lysol spray also helps get rid of smoke smells and makes your furniture smell much better.