Hi anonyme, bad air quality has been a recurring topic here on WSB, and the usual “suspect” is the Lafarge Cement Plant.
Whether that’s the case here or not, we of course don’t know.
Here is a relatively recent article from the Main Page, and has links to Puget Sound Clean Air Agency, where you can report the odor.
If it is from the Lafarge, that’s not good, obviously. But, I hope for your neighborhood’s sake, it’s that rather than a meth lab.
Hope this helps.
Mike