Re: The whole house smells like pee...
I recently had good luck with a 3 hour soak in hot water and Calgon followed by an overnight soak in Rockin Green Funk Rock Ammonia Bouncer. Then washed normally followed by 5 rinses. I had mf, hemp and a few cotton and bamboo diapers.
I did not soak any covers, or anything with PUL. I was a bit scared but had really good results. The water was yellow and murky in the morning. Iam am not sure about Oxy for a long soak but I would not use vinegar as it could make it worse.