I had to clean the walls and ceiling in one room formerly occupied by a heavy smoker for 25 years. I attacked the job with a sponge mop and a TSP solution.
After about an hour - and three fresh buckets of cleaning solution - I had done about one-quarter of the ceiling. Bummer. Then a possible solution occurred to me: two words.
A modest PW from Harbor Freight (1500psi) got the job done in thirty minutes! I'm not kidding! Ceiling, walls, and floor, plus trim, floorboards, and window!
The wet-dry vac and a mop picked up the water on the tile floor and 24 hours of AC and fans dried out most of the remaining wetness.
Now there are some potential problems necessitating caution. The PW may blow a hole in the sheetrock if held too close. And you need to be aware of getting too vigorous near electrical outlets and overhead lights.
Anyway, the room looks so good (compared), I entertained not painting it at all(!).
Nah, I'm gonna paint it this week-end.
Maybe Home Depot will take back the three boxes of TSP I bought in contemplation of the original plan...