I believe that the hazards of carbon fibres have been greatly understated. These materials have been developed to have properties very different from those of gross carbon; yet the hazard analysis seems to have been carried out as if it has the same properties. You can't have it both ways. Some research carried out trying to quantify the inhalation hazard of carbon nanotubes by comparing silica dust exposure (the gold standard for hazardous particulates) and carbon nanotube dust exposure in rats, found that exposure at a level that caused rats exposed to silica dust to die after days or weeks, killed ALL the test rats in about half an hour (sorry can't cite paper exactly). Your carbon fibre cloth probably isn't as bad as that, but I wouldn't be handling it in my house. If the fibres are bound in a matrix, totally benign. I think I'll put on my foil hat now; major league baseball is stealing my thoughts....
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