happened to one of our twin kitties with a paper shopping bag. at 4 in the morning. in our bedroom and the connected bathroom to our spare bedroom/cat room. end result was a mild tornado effect, and the other twin kitty being scared to come into our room or play with her sister for about a month. :/ she did get over it eventually! the one with her head in the bag couldn’t have cared less.
Or that may be just how well Hemlock can spell his own name…