Other Answers (27)

• Dust is just bits of fabrics (clothes, etc) and dead skin.
• There can many sources:
  your windows or doors are not completely sealed. So wind blows real dust in.
  your dry skin
  fabric from your beddings and couch
  dust from you when you come in from outside
  open windows when you ventilate your room
• Alien spuff
• It%26#039;s mostly skin! Yuk!
• I don`t know the scientific answer, but I have always thought dust is merely the recycling of the world in general! I mean, isn`t everything decaying and renewing all the time?
  Go up into an attic and see the layer of years of dust up there....it can only have come from decaying roof materials, and some possibly blown in.
  Thus dust if everywhere, and always will be, as it is obviously part of nature.
  I also read somewhere, that `germs` sometimes travel (piggy back) on specks of dust - which makes sense to me... so always remember to keep your mouth shut at all times!
• Dust is basically the waste of dust mites.
• Dust fairies all the way...lol
• yeah it comes from your skin
  its your dead skin cells
  tried like rubbing your skin - arm i mean above a black clothing or paper and then you will see at the white things come down .. little and little
  theres how dust are made
• A lot of (indoor) dust comes from dead skin cells that flake off, so I have heard. Outside dust can come from a lot of sources.
• FROM YOUR
  SKIN
  OLD THINGS
  USED THINGS
  BED
• It is a combination of shedded fibres, shedded skin etc. That%26#039;s why there is less dust in rooms that are not used a lot.
• dirt in the air skin flakes dust mite waste bacteria poo
• everything is dust once you take it to its bare basic
  
  earth to earth ... dust to dust.
• Dust can come from many different sources. It is in the air, however the particles are so tiny they are not visible to the eye. Once they settle on a surface along with millions of other dust particles they become a visible coating.
• Most of the dust comes from dead skin 80% of your skin actully.