Just to be clear, at the time of Chernobyl disaster I was living 700 km away in Krak贸w and we obviously were not notified until like 3 days later.
There was no visible increase in cases of thyroid cancer in Poland, and you can collect mushrooms in forests because any levels of cesium are so nominal that they have no biological effects.
But you know what is very widespread in Krak贸w? Lung cancer and other lung diseases caused by coal.