For steam based heat systems there is also cooling options, so that is a fix for those cities with central heat service.
Bonus - you can throw your bulky, ugly radiators out too!
What's wrong with heating air? It was the norm in every house I grew up in...
My nose simply doesn't work with it, I get an allergy-like reaction that never stops (non-allergic rhinitis), and my wife has the same issue, and many people I know too.
Or you could just respect that people tend to know much more about their medical conditions than you will ever know.
It's not my house, it's many different places and many different irritating causes. It's not an issue with dust or high CO2 in my case.
You’d probably want to look at greater picture - I’d much rather have runny nose than suffocate in co2, catch infections or die from heat.
Billions of people live in air conditioned environments. They don’t seem to complain.
But if you actually did read what I wrote, there was no complaint from me about the cooling part of the AC.