dust two

I was walking around the other day in the dust, and I saw some folks wearing masks. I have one too, the disposable kind you might use working on drywall or somewhere there is a lot of sawdust.

The second day I was here, there was a dust storm and I had a cough for about six weeks. I would wear a mask for the dust storms after that, but at some point I got out of the habit. Now the dust doesn't even bother me. I wonder if I will have trouble breathing the air back in the States since it isn't as thick?