He could not keep running in the thick air of this burrow.

My words popped in the thick air like water on hot oil.

They were 9000 feet above the desert floor now, flying low in the thicker air.

It felt even better in his lungs after the thick air of the death room.

I knew how to open myself up and pull in the thick air.

It's hard not to like that scent, especially in thick air.

Even the air, thick and still, seems to smell green here.

He almost passed out from the effort, in the thick air.

Then he moved off into the crowd and the thick air.

The words fell heavy in the thick air; there were no other sounds.