Not me. The air. I noticed on my ride today that the sunlight was a little dimmer, and redder than one would normally expect. And there was a faint (maybe not so faint) smell of smoke in the air. Over by Crystal Springs Lake, you could REALLY see it, almost obscuring distant hills. I hope whatever fire(s) the smoke is from are contained, and the loss of property, or god forbid, of life, is minimal!
I'm not sure whether it was healthy to ride or not, but other than the smoke, it was freakin' awesome!