i had a friend that would have reactions when she would walk into a fabric store. Especially the ones that had the isles together. At one point she literally had to leave the shop. So it could very well be what the fabric is treated with. Good luck, hope you figure out what is causing it. I've also heard that fabric attracts mites & I know none of us like to think about something like that but if we keep it stored for any length of time, what a nice cozy place for them!