I saw this article at BoingBoing, and had to look it up.
From Wikipedia:
The Aroma of Tacoma, also known as the Tacoma Aroma, is a putrid and unpleasant odor associated with Tacoma, Washington, United States.[1] The smell has been described as similar to the odor of rotten eggs.[2] The odor is not noticeable throughout the city, but is rather concentrated in the Tacoma tideflats and is frequently smelled by motorists traveling that section of Interstate 5.[2]



Gary Ridgeway?
Iirc, after his arrest they interviewed his coworkers and the consensus was “oh, that fits. it makes sense.”
They were calling him “G.R.” and “Green River Gary” long before he got caught, too.
Yeah. They called him “Green River Gary”. He was only about to kill those girls because police are shit.
Some things never change.