I have always had this theory that most dust comes from socks. I mean, when your socks wear thin and eventually get holes in them, where do you think that the lost material goes? I figure it must become dust.

However, recently, a friend of mine attended a health and safety program. While there, he was told that studies of office air quality have shown that from 40 - 60% of all dust in an office environment is from exfoliated skin cells.

Come on ... say it with me ... "Ewwwwwww...."