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Iren looked around, trying to determine what the room was like – its height, whether there were windows, any terminals, or anything else.

The artificial cough of the doctor echoed through the speakers installed in the room.
— Relax, that's how it's supposed to be. It will be a little unpleasant when the liquid starts to penetrate the body through the mouth, but you need to endure.

Added after 42 seconds
There are no windows here, nor anything else, except for the doors. The height is about 2.2 meters.