The Bay Area saw some of its worst air quality ever last week, especially close to the fire lines.SANTA ROSA, Calif. (KGO) -- The Bay Area saw some of its worst air quality ever last week, especially close to the fire lines.Watch the video above to see the story of a Bay Area startup that helped provide some relief from the smoky air. VIDEO: The perfect reminder to thank a first responderClick here for full coverage on the North Bay fires. Report a correction or typo