[Kukalaka]

Originally Posted by MrQ1701

Why would the things get dirty if everything is clean to begin with? Where would the dirt or dust come from in a sealed environment such as a Starship?

Somewhat disgustingly, a certain sizable percentage of household dust is our dead skin cells

[Futureguy]

Originally Posted by Kukalaka

Somewhat disgustingly, a certain sizable percentage of household dust is our dead skin cells

AND they could contain small mites that eat the skin cells.

[Botany Bay]

Originally Posted by Futureguy

AND they could contain small mites that eat the skin cells.

That die and are eaten by other mites, that get hunted by even bigger mites untill a completely new fauna evolves aboard the starship. Beware of the supermite population in Jeffreys Tube 12-a/2b. They arent as harmless as they look.