Krakow is different thing, i agree, but its not only matter of pollution but
location of the city, surrounded by mountains
there is central heating, but very old building does not have access to it
on ukraine you had gas for free from russia, so its different thing too
gas in poland is expensive
krakow is worse than wroclaw because of this, there is very high cancer ratio
so its stupid paying so much for properties there and live shorter
better stay in wroclaw
i live 100km from krakow in straight line