Spent lots of time (many years ago) in the Imperial Valley (Niland, Calipatria, Brawley, and the fabulous stockyard city of El Centro)...
IMHO, these tremblors are NBD routine...
Did relief work in El Centro after the 79 quake ,and many mornings the wind would carry in the stockyard smell.
Asked the locals how they tolerated the smell, and the response was always: “What smell?”