Long story short, i used to be a sports photographer, certain 2020 event meant i had to stop doing it and the gear has been sitting around in my bedroom since.

I had (just off the top of my head)

Canon 1D IV

EF 70-200mm f/2.8L USM (Non-IS! from the 90s)

Some cheap 90s kit lenses like a 35-80

A vintage miranda 28mm f/2.8 which was really fun to shoot with

Some other misc stuff like a microphone.

I'm an idiot, i should have taken it out every week or two and left it out for a while, but i didn't, and it was too bulky to use for anything else, so it sat in that bag for over 4 years, it was probably used once or twice and that's it.

Lately i'd been noticing some mould growing in my bedroom out of nowhere all of a sudden, so i decided to check on my gear, my smaller DSLR kit (7D 24-105 L Mark I 50 f/1.8 STM) was fine, just some fungus on the front of the 24-105 that wiped off and didn't leave any marks, and maybe the very start of something on the 7Ds mirror, but nothing catastrophic (last i used that was about a year ago)

Unfortunatly though, i found my old sports photography gear had been literally infested, pretty much every lens in the bag has some fungus somewhere, the 28mm and 70-200 got it the worst, the rear element of the 70-200 and front element of the 28mm are like petri dishes.

Even worse, the camera is infested, there is fungus inside the viewfinder optics, and definitely growing round the edge of the mirror, my fear is that the camera will be totalled if fungus has also grown on the LPF or even directly on the sensor.

I'm going to implement anti-fungus strategies and will charge the cameras up to test them, however, what should i do with the infested sports photo gear especially if the 1Ds sensor is fungused over? the camera and lens used cost me over a grand used circa 2017, is fungus covered on home insurance? not sure how to continue here, i'm also strapped for cash at the moment (borked TV getting my antique watch restored) so a pro defungusing isn't an option, and i doubt a grand is what i can get for them used now.