Future climate change may cause either an increase or a decrease in background tropospheric ozone, due to the competing effects of higher water vapour and higher stratospheric input; increases in
regional ozone pollution are expected due to higher temperatures and weaker circulation.
So when we do things that emit GHGs, we also likely emit local
pollution that kills, & becomes
regional acid rain (destroying lakes, crops & forests), & acidifies the ocean, depletes the
ozone layer (some pollutants), and maybe a hundre other harms, in addition to contributing to GW, and to runaway GW.