I’ve done some projects in and around prisons. I think the thing I would hate the most is the noise. There was always a couple of guys yelling the entire time. Even working off-site far from the walls you could hear this constant yelling. I would go nuts.
My neighbor is a 20 year corrections officer. He agrees with you. He told me that even after lockdowns, lights out it is still noisy.
The smell is worse than the noise.