I was intern at research facility that had this story as part of the local folklore: male researcher and female researcher stayed the night to supervise long-lasting experiment, fire inspector was doing rounds and walked upon them having sex. He reported this to the director of the facility. Director said "I don't see how fire safety was affected" and dismissed the complaint.
The only reason is because your other clients might object - they might not want to be put in the position of having to ignore what is going on next door in the middle of a meeting.
