What is a "hood" in this context?

A forum poster was giving an account of his visit to his friend who is an owner of a burger shack, and in one part he said:

We smoked some of the Mr. Nice I brought along to give him and his employee for the trouble and blew it up into the hood in classic poverty restaurant style :coolface:.

What is a hood? Is that the ceiling of the restaurant? I was thinking this couldn't be the folding hood of the car.

Edit:

This is the picture of the kitchen he posted (couldn't scale it down unfortunately I'm on iPad :(), not sure if that device on the top left corner is the extractor or not, but could possibly be since I think there's what it looks like a fryer on the far right below it.

In this context, sense 9 of hood applies: “A metal covering that leads to a vent to suck away smoke or fumes”.

The “classic poverty restaurant” / burger shack will have a big heated stovetop, or grill, with a noisy fan to move smoke from grease burning on the grill – or in this case from the joints they smoked – out of the restaurant.