The issue is not about smog, it's about the fundamental elements God created to enable all life to exist.  Ignoring the fact that the "science' used to claim "climate change" is phony, the issue is is man able to destroy that fundamental formula of Oxygen and Carbon Dioxide.  I say no.  

The "Climate change" believers have to think that God made a mistake when He created all life based on O2 and CO2, a mistake because of man's emitting CO2 in energy production entities such that it will affect temperatures causing them to rise with devastating effects of the earth and consequently on life on the earth.  Well, God's creation of life is based on O2 and C02 with human and animal life needing oxygen, giving off CO2 in return, and plants needing CO2 to live and grow, giving off O2 in return.  Read some of my comments to get further info on this process, but suffice it to say, increases in CO2 has resulted in greater food production and land available for farming based on photos from space.