Is anybody else smelling that *smell* again too?

There was a rotten smell in the air a couple months back. This afternoon in my backyard in the Heights I started smelling it again, and now at work on the Waterfront it’s even stronger. I am getting a headache too!

Was this determined to be coming from Longview last time? Is it the same thing?

Is this smell indicative of hazardous chemicals? Should we be worried?