You absolutely should not use the large cover while the fire is still burning
and the fire ring is still hot. You do not want to do that.
Instead, we use the snuffer
which is made of a thicker material
and is perfect for extinguishing the fire.
In a moment, you'll see it starting to smoke.
That's perfectly normal and happens because the oxygen supply has been cut off.
So now, you can go to bed without any worries.