Lee from Colorado's Post

@c_merriweather @ai6yr
Yes, these kinds of disasters are very dirty. Breathing fire residue: very bad.
(C-R boxes and masks are your friend.)

Floods are also very dirty. For example, we had a big flood locally in 2013 -- a "thousand year" event, which is likely to be a once a decade event now.
And it blew out all the local septic systems. So, not just flood water, but lots of partially processed human waste...