>And many countries make it [aircon] illegal without health reasons.

Name one country that has done this.

https://consumerchoicecenter.org/keeping-it-cool-removing-hu...

How about 29 countries?

"AC penetration stands only at 19% (vs. 90% US, 91% Japan). This is not a cultural inevitability but a regulatory outcome"

And specifically Geneva Switzerland, it requires medical need to install air conditioning. https://www.gazetaexpress.com/en/Why-are-air-conditioners-al...