Yeah...it's horrible and it stinks!
I ruined a number of mattresses and setees over the years but it was usually the floor.
I did manage to stuff one of the son's nappies/diapers down my pants one night and it held the whole lot. I was very pleased with myself...
Nearly 4 years since any of that carry-on. I don't think I could live with someone who was urinating on me!