turns out the room i was staying in for a year DID have mold under the floorboards

[holocaust denier]

Josh? How is this even still an issue? Just get rid of the mold or move and request a contrast ct of the lungs to see if there is any issue. 

Usually mold just triggers things like pre existing asthma and allergies from what I recall, and most of the new age mycotoxin testing, binding etc is nonsense but if you developed a legitimate infection then of course you’d need intravenous antifungals. Should be easy to check for though via imaging of the chest and sputum culturing

yeah, it never had an effect initially. but for some reason if your airways are compromised it just makes everything go haywire. testing showed slightly elevated levels of some mold antibody; still within normal range, but as we know those are bs

Maybe there is some waterproofing or insolation surface that blocks the movement and causes liquefaction of vapor water, which is the most common cause of mold growth. If the timber is moldy then the entire floor needs to be replaced. But you should look up the issue above because you are gonna have the same issue again.

Years ago I had mold in my ceiling above my bed for some inexplicable reason, and I found out around a year later that the guy above (crazy old man) had a flooded bathroom and the water was going through the floor into my apartment... and of course it grew mold..

yeah, there's some under the floor but it's all supposed to be inert; i.e. shouldn't facilitate mold propagation