Clouds of thick, gray smoke moved from west to east.

A thick column of dark, gray smoke rose behind the door.

It took a few moments, but soon the room was filled with thick gray smoke.

The others heard the shot and saw the plume of grey smoke.

And from a basement window, a small puff of gray smoke.

A cloud of gray smoke shot up from inside the boulder.

I saw movement on the ground north of the dark gray smoke where my rocket impacted.

Soon the northeastern sky was a solid mass of gray smoke.

Mixed in with the white and gray smoke were swirls of black.

He blew a puff of gray smoke into the night.