Those kids are bound to develop a much more ept immune system than those whose houses are hospital-disinfected.
In days of yore, people working on farms ingested all sorts of 'pro-biotics' from soil unwrecked by seasons of chemicals. Pro-biotic hadn't even been coined.
(I'm still benefiting from my experiment, done also before the meme spawned so much BS-grade stuff that now, it's nearing impossible to vet the sources/composition of most.)

Vulture capitalism will do that, natch--ethics-free by-design.
Nobody knows if we can un-wreck so much deadened-soil; add-to-long-list :-/ then burn it.