What do you call the frozen air that comes out of your mouth?

Question

What do you call this water vapour coming out of your mouth during winter times?

Answer 1

We call it just breath. From Google Books:

In the summer, it's stifling hot; in the winter, you can see your breath.

But the upstairs in our house, where I slept, was unheated; in winter you could see your breath up there.

See," I said, “ on this sunny side of the barn, where the air ,is warm, you can't see your breath; on the shady side it comes out like a cloud.

From the "Handy Weather Answer Book":

You can call it water vapor but common people talk about it as just breath.