No it's not. The CO2 and methane that causes warming doesn't have effects on health (at least at current levels), and conversely smog actually cools the local area by blocking sunlight rather than warming it.
> Humans have increased atmospheric CO2 concentration by more than a third since the Industrial Revolution began. This is the most important long-lived "forcing" of climate change.
https://climate.nasa.gov/causes/
> Humans have increased atmospheric CO2 concentration by more than a third since the Industrial Revolution began. This is the most important long-lived "forcing" of climate change.