Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does not drown out coworker in cube next door.

I have a coworker in the cubicle next to mine who chomps on gum for hours on end without break. It's quite disgusting and makes me ill. I bought this machine to drown her out. Unfortunately, I can still hear her incessant gum smacking and obnoxious chewing sounds despite the fact that this machine is so loud that it makes my head hurt.