My Pebbles has such fine hair that this happens to her also. It's so cute. She looks like a mess.

What about maybe using a dryer sheet and rubbing that on the couch? I really don't know. What I do when my house gets to dry is I put a pot on the stove and just let the water boil.
I'm sure a humidifier will work also. It isn't just a microfiber couch because my regular cloth couch does it also. Hmmm!!