We have no-burn days here on the west coast. Can't use the fireplace, can't run lawnmowers nor other small engines. Pisses me off because Chinese smog drifts to the U.S. west coast, and we suffer for it. We're not causing a lot of this smog, it comes from China.
I'd wager you aren't causing any of it...
...unless of course, "We" were to include the Hollywood Idiots. burning tons of raw gasoline for their exciting crashing, burning and exploding movie special effects over on the back lot.