Despite what mentioned and little did I know, the air quality was NOT good. The fact that I didn't get an asthma attack was good enough for me.
In a situation when yellow dust levels are uncharacteristically high, one must wash face and go inside. Otherwise, you'll get allergic reactions and breathing problems that can linger for a while. Perhaps ignorance is bliss as this was the day before the Seoul Marathon; good thing the weather changed overnight and the marathon was held amidst nearly perfect conditions.
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