How to avoid smog?

Stay indoors or move: You cannot control the environment or air pollution. For chronic smog, you need to wear mask while outdoors. To avoid smog, you need to stay indoors all the time, which may not be very healthy long-term. Otherwise, to avoid smog, you need to move to an area where there is clean air and no smog or air pollution. For intermittent smog, wear mask outdoors or stay indoors until smog clears.