the origin of dust

dust came into being when mankind came out of the forests and begun to build their own shelters. these shelters were so weather-proof that weather couldnt get in (duh). This weather-proofiness set the conditions for a creature to come into being and start spreading itself onto everything, onto beds, unused books, shelves, coffee tables, and skeletons. there now was no weather to erode this creature away, and so on.....