"Code Brown" is the industry term for when someone has defecated or vomited in the pool, requiring immediate evacuation and thorough cleaning.
In some retail environments, a "Code Brown" is a serious emergency alert indicating a violent act or active threat in the store. If you hear this, you should typically evacuate the store immediately and follow staff instructions. Medical/Hospital: download-code-brown
It is often the designated code for a hazardous material spill or gas leak. "Code Brown" is the industry term for when