system
A chat on subreddit /r/pcmasterrace
human
The tar in cigarettes loves to stick to fans. The same with aspirated oils, I see this very frequently in computers that exist in oil environments such as machine shops or restaurants. This Just compounds the other issues with dust and in your case, spores.
gpt
Spores are super sticky, oh fuck me after harvesting 50-60 pounds of uh, corn my hands would be pitch black and it would take paint thinner and pumice to remove them damn spores.

Worth it though, throw on some Peter Gabriel, make a big bottle of corn tea then trip balls all night, on corn.