For me as a non-smoker to actually see what I breathe is a foreign concept. To make matters worse, I don’t know what is more debilitating, standing at Union Station breathing this, or stepping outside and breathing the smoke from northern boreal forest wildfires, which has blanketed Chicago for the past week.

I wonder what equivalent of packs of cigarettes people inhale while waiting for the commuter train every day. Is this second hand smoking or first hand? Or one and a half hand???

At least it makes photogenic rays of light…