"We cannot simply fumigate entire cities at 0.3ppm for weeks at a time until an outbreak dies out." It would be interesting to see the natural selection effect

"We cannot simply fumigate entire cities at 0.3ppm for weeks at a time until an outbreak dies out." It would be interesting to see the natural selection effect on other things, both primary like killing off something beneficial-ish and secondary like wiping out a niche which is then re-populated by something tough that is ClO2-proof. The tertiary effect would be most interesting. Imagine if you could kill ever garbage eating plague rat during the black plague era... and then after the plague burns out, all of the rats come back all at once and hyper over populate eating a years worth of garbage and debris in a month.