I used to work as a chemist at a water treatment facility on the east side and let me tell you the smell of that place was the most intense thing i have ever put into my nose. Even just regular gray water(drain runoff, oily water waste, etc...) can smell like a a doodoo party.
they were talking about this on the 6AM news, people were calling the station, I was like damn, I hope that many people aren't smelling gas. that would have been scary