Have any of you had a problem with the very fine dust around your machine that is created by just sewing cotton fabric? Sometimes I cough and can't figure out what is causing it except that I sew so much more than I used to. The dust around my machine ( mostly on the sewing table) really builds up fast. I dust it down with a damp cloth, but it sure builds up fast. Have any of you noticed that is makes your throat scratchy? Thanks for your comments - I would like to think I'm not the only one.