smokeproof

American  

[smohk-proof] / ˈsmoʊkˌpruf /

adjective

1. that cannot be penetrated by smoke.

   a fireproof and smokeproof compartment.

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Etymology

Origin of smokeproof

First recorded in 1900–05; smoke + -proof

Example Sentences

For example, many garment factories in Bangladesh lack basic means for workers to flee in case of fire — specifically fire escapes and smokeproof enclosed staircases.

From New York Times

It was the first to use: electric light throughout, pneumatic tubes for cash-carrying, smokeproof walls, fireproof stairways.

From Time Magazine Archive