I was thinking the same thing. I was even thinking of heading out to the drug store tonight to get some masks. But as you say - maybe they are not the right type.

I have a couple of flights next month through IAH to the SAN and LAS. I was thinking - should I will be wearing a mask for the trip and skip the food?

I was in Seoul last month and most had on masks - but in this case it was because the city was in a complete haze from Mongolian yellow sand dust storm which lasts for several days and the city is like early evening all day.