Whenever I catch myself getting worried about soil microbiology, I remind myself that bacteria and fungi are globetrotters. Soil life has been found in air samples taken at the tops of the Himalaya. If they
land somewhere habitable they will flourish, and this is why that rich soil smell is pretty much a constant no matter where you go...it's the same major families of bacteria and fungi, just varying in
local composition according to what they're living in.