I am from a generation that grew up when The Americans, the Soviets, the British and the French were all conducting open air nuclear bomb testing, showering us with hot rain containing radioactive strontium 90 that accumulated in our bones. Hanford, down in Washington State, was venting radioactive iodine from the reactors creating plutonium for bombs. That was all flavoured with DDT and similar pesticides and we washed our clothes with carbon tetrachloride, our hands with naphthalene, ran vehicles with leaded gas, used asbestos extensively on on and on. It certainly didn't do us any good and some undoubtedly died but most of us are still here.
Not to panic about a little diluted radioactive leakage.