If whatever you use for the walls smells or slightly stains, you might be able to get it off with TSP from your home improvement store.
For example a proven antidote for skunk juices is vinegar, a proven method for taking wallpaper off walls is vinegar soaking, and a proven method for getting rid of the vinegar and residual glue is TSP.
Home Depot has an eco-friendly TSP mix that is much better if your waste water runs off into rivers or oceans. Works almost as well as the toxic version.