lol no. Lead in the atmosphere is a problem, because if it's in the atmosphere, you are breathing it. Remember that next time you see a gas plant spewing out exhaust.

Nuclear power plants will not exhaust anything except water vapor unless things go terribly wrong. Things going terribly wrong basically cannot release radiation with modern designs unless you were to bomb the core directly, with large bombs to defeat the containment building and massive amounts of stuff surrounding them...

Fossil fuels are infinitely worse for everyone than nuclear, with or without lead.