Appears the first pic has mold in the fan...nice
You can tell which one was the smoker in those pics.
People with super fluffy PCs like the one above usually have wooden floors and or vacuum often.
Encounter a lot of these fluffy PCs when working as a techie.
Pcs from rural areas are the worst, Cockroaches, spiders, moths and the ones which are left open or have a PCI slot at the back open usually have mouse crap and piss under the area of the HDD where it was nice and warm.