Translation of "Exhaust" in Portuguese

We could smell the exhaust.

Nós conseguíamos cheirar o escape.

There seems to be some problem with the exhaust system.

Parece haver algum problema com o sistema de exaustão.

Exhaust fumes decreased, the chimneys of the factories did not smoke

Os vapores de exaustão diminuíram, as chaminés das fábricas não fumavam