Mold spores are everywhere. If they were a useful and plentiful food source, an organism would have evolved to consume them in bulk by now.

The presence of spores isn’t a problem by itself and eliminating them isn’t feasible.

Spores are kind of designed to not be valuable as food. Can you name some organisms that actually consume spores rather than eat and then poop them out?

It doesn't need to be the species' spore-stage per se, as long as it occurs somewhere in the lifecycle before bad-stuff-humans-care-about happens. Can we encourage any (microscopic) conditions that trigger germination that turns out badly for the fungus?

Kind of like how there are plant seeds we don't eat directly, but we trick them into opening up and eat the sprouts.

Better to make living spaces antimicrobial,

use surfactants,

instead of particleboard, open edged gypsum board, and open grain woods in basements and attic rafters

where humidity and condensation are inevitable.