To me, this looks like a chemical burn. This can happen when chemicals not intended for topical placement are used. Other white lesions that should be included in a differential diagnosis are frictional keratosis, hyperplastic candidiasis, and lichen planus. But again, it looks like a chemical burn to me, not sloughing of tissue caused by Listerine.
The only other possibility may be an ultrasonic burn? This doesn’t look like the ones I have seen other pictures of, but if nothing else is the cause, could be another idea!