I am Polish and I don't see any racism in the previous comment because it was just a statement of the fact (disputable at best). I see some in yours, because you seem to suggest that race is somehow involved in what we are talking about.
LOL, there is nothing racist about it, neither Poland nor Czechia are really into environmental enforcement against individuals, and you can definitely smell it in winter. As of now, "small sources of pollution" (e.g. mostly individual homes) are at least comparable to industry when it comes to releasing bad stuff into the air.
I hate the acrid smell of burning plastic, but no one will do anything about it.
It's the same in Latvia. Riga wants to set up a zero-emissions zone and a toll to enter the city center, but won't ban open stoves or solid fuel burning, which pollutes much more than cars in winter.
Kraków just set up a clean transport zone; it went into full effect just few weeks ago. And people just can't shut up whining about it, even though it doesn't really put much burden on ~anyone. Most people drive petrol-powered cars (usually converted to support LPG, too), and the minimal norms for the clean transport zone are so low, it's hard to find a car that doesn't meet it. You can buy a used petrol-powered car with pocket change and it would already meet the norms.
Those are useful, but not very effective usually as no one controls it after a few months, unless you set up a costly and complex certification and licence-plate monitoring system.