@DanielleNeedham wrote:
I keep them in my room and my room gets quite damp. So that’s all I can think of for them all to have it.
This is shutting the stable door. However, a room potentially can be made drier by ventilation or heating and there are very effective dehumidifiers available nowadays. I realise this may not be possible or too costly.
Fungal spores get everywhere and they will be in the camera body too so maybe store body and lenses separately as
@eoSimon wrote.
You could store the lenses with silica gel sachets (available on Amazon or ebay) in airtight boxes. That won’t cure the fungus but may stop it getting worse or spreading.
Hopefully someone with more experience of this will chime in.