While the Carousel Room is spinning, it's described as:
Carousel Room
You are in a large circular room whose high ceiling is lost in gloom. Eight
identical passages leave the room.
A loud whirring sound comes from all around, and you feel sort of disoriented in
here.
After it stops spinning, the second paragraph is removed:
Carousel Room
You are in a large circular room whose high ceiling is lost in gloom. Eight
identical passages leave the room.
Two of the rooms around it still refers to the whirring sound:
Marble Hall
This is an arched hall of fine marble. The hall stops abruptly to the north at a
ford across a stream, where the marble is cracked and broken. Perhaps a flood or
collapse of the cave was responsible. To the south the hall opens into a large
room. There is rather annoying whirring sound coming from that room.
Path Near Stream
The path follows the south edge of a deep ravine and heads northeast. A tunnel
heads southwest, narrowing to a rather tight crawl. A faint whirring sound can
be heard in that direction. On the east is a ruined archway choked with
vegetation.
While the Carousel Room is spinning, it's described as:
After it stops spinning, the second paragraph is removed:
Two of the rooms around it still refers to the whirring sound:
It would of course be trivial to fix this.