I’m pretty sure it isn’t. I used to live in Pittsburgh and would wake up with a metallic taste in my mouth if I left the windows open. Going outside almost alw

I’m pretty sure it isn’t. I used to live in Pittsburgh and would wake up with a metallic taste in my mouth if I left the windows open. Going outside almost always smelled like burnt tires or some small hint of coins, even when I’d walk around in parks early in the morning before there was any traffic. I had friends from Beijing complain about the foulness of Pittsburgh’s air. Visiting Beijing, I realized they weren’t joking. It’s visibly smoggy over there, but in Pittsburgh, clear days will reek worse than even smoggy cities.