Re: flooded room
I did some work for a company who specializes in disaster clean up, and asked the owner about a similar situation at my home.
It was recommended to me to use Zinsser Perma-Wash to thoroughly scrub the surfaces, and any structure that was remaining.
Buy one of those plastic tank garden sprayers (~$20-25) and use that to apply the solution, diluted to the strongest concentration recommended on the label.
I wish the GCs I worked with were as quality-minded as Tom Silva and Mike Holmes.