FROWST

"I hung up, went through the gate, down the ramp, walked about from here to Ventura to get to Trace Eleven and climbed aboard a coach that was already full of the drifting cigarette smoke that is so kind to your throat and nearly always leaves you with one good lung. I filled and lit a pipe and added to the general frowst."

Playback, Raymond Chandler.

Frowst (noun) British Informal.
a hot and stale atmosphere; stuffiness; stifling warmth in a room.

Now to incorporate frowst into everyday conversation.