[001sky]

It's probably worth making the distinction that most people are exposed to "Carbon Fiber" as CRP[1], not "raw carbon fibers". And it is the ~aersolized bits raw carbon/dusts (the subject of this article) that are problematic.

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[1] The german title is "Bundeswehr warnt vor Krebs durch Carbonfasern", and From the German wikipedia page "Carbonfasern" ...

The fibers are mainly for the production of carbon fiber reinforced plastic used (CFRP = Carbon Fiber Reinforced Plastic). Derived from the English, the abbreviation CFRP (is english Carbon Fibre Reinforced Plastic) used.

[genericuser]

Much like asbestos siding in that regard, where its not exactly being pumped into the air by most people, but people who work with it, for example sanding it, create a health hazard.

[jpindar]

And indeed one way of making existing asbestos building materials safe (or at least, safer) is by spraying plastic on them to encapsulate them.