There is a fiberglass weaving mill here in town. They make filters for aluminum for companies like Alcoa, Reynolds, ETC. I worked there part time about 35 years ago. That stuff will drive you crazy. First thing I learned, was to take a cold shower and get the fiberglass off. Cold closes up the pores in your skin, hot opens them up. I could get most of the fiberglass off if I went cold first. Drove me nuts until I figured that out.
Thanks for that information. Have a feeling it will come in handy in the not so distant future on something else I am planning.