Good point, people get desensitised to things, and associate say CO_2 (lets add CH_4) emissions contribute to climate change.
So if we take car / bus emissions people are told the same thing, so you are correct if we change that to use cars less (generally) replace buses with electric or Hydrogen buses and benefit from clean air when YOU go out, the consequence is about them, most people in the UK will have seen about the fires in Greece or the US, and think that is 1000s of miles away, if the benefit is their regular outdoor route, it is personal to them and their family.