To get smoke smell out of a suede couch or suede furniture sprinkle some baking soda onto the suede couch and then use some dish soap and a microfiber cloth to gently clean the suede couch by scrubbing it.
Then after you do the above mix equal parts of white vinegar and water in a bowl and then dip a nylon-bristled scrub brush or a brush designed for suede into the vinegar and water solution.
Then shake off most of the water and then gently brush the suede upholstery with the vinegar mixture.
This should take the smoke smell off the suede couch and then you can also spray the suede couch with some Febreeze or other fabric or upholstery cleaning freshener.