tinnitus, a comparison with London smogs is spurious, there is no comparison. It was very obvious what the cause was and what the effects of the smog were - much illness and human suffering. The effects were there to see.
With colourless and odourless CO2 there are no observable effects on people - there are only projections of what might happen in future in the environment. There is no guarantee any of their predictions will come true. We do know, however, that we will have weather events just like we have had in the past so we should plan to deal with them.
And, by the way, I note our warmists like MobyT and Ant have yet to admit temperature has not risen for 10 years as "real" climate scientists have admitted, they are still wanting to use longer time frames to try to wipe that out.
