Dirt is matter in the wrong place at the wrong time, “something misplaced” [5. 52], undesirable remains (abundant synonyms including refuse, muck, rubbish, garbage, trash, detritus, feculence etc.), or pollution coming about through lack of hygiene and sanitation by mechanical, biological (e.g. menstruation), physical, or chemical processes (e.g. oxidation, rust) and capable of contaminating an organism or system with undes…