I had some materials gifted to me and also some send so I could help with charity quilts. (sewing room in bedroom) I got really congested, just happen to wash the materials except the charity ones sent... my congestion is leaving. I moved the charity material out so I would not be sleeping with it. I sure feel better. Guess I have an allergy of sorts to it and never knew. I did my cutting in bedroom also. I found that bothers me, so will be cutting at table from now on.