There was a man's voice calling to her through the black fog.

Instinctively, I and some others ran into the black fog to see what we could do.

The story begins with a substance known in the game as black fog.

Terrified, they held their breaths and ran through the black fog to the front door.

A fruit bowl on a table at the room's center vanished in a black fog.

All around us Marchers were emerging through the black fog.

I was in a blanket of heavy, nearly black fog.

They saw that black fog you raised, and turned tail.

It was as if a swirling black fog had descended over them.

They emerged from the black fog almost instantly and much closer to the trouble below.