radon gas risk 2

https://myradonlevelsmissouriwire.northcrestbrief.com/posts/understanding-radon-levels-missouri-homeowners-should-know-about

You can't see or smell radon gas, but it might be seeping into your basement from the ground. It's a natural radioactive byproduct of uranium decay, and breathing it over many years is the second leading cause of lung cancer. Testing your home is the only way to know your risk, and simple mitigation systems can keep levels safe.