"My girlfriend lives in a basement apartment and in the closet under a false floor there’s this pipe in the ground. Smells terrible like sewage. Any idea what it is and how to fix it?"
A: "It appears to be an old broken drain, or more likely, a cleanout with a broken cover. That needs to be capped ASAP. Sewer gasses are a noxious health hazard. Note, tape and plastic are not an acceptable cap."
Same thought here....i realize I am old :-(