Insulation material on Time's list of the 50 worst inventions (8)

I believe the answer is:

asbestos

(Other definitions for asbestos that I've seen before include "Protective fabric" , "Fireproof material, now known to be dangerous" , "Fire-retardant material" , "fire protection" , "Fibrous material, doesn't burn" .)

I've seen this clue in the Universal.

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