I think you are over reacting. Cloud seeding is done with silver iodide, which is not toxic to humans. it scatters over a huge area. I dont think its really a problem at all.
as for the fluoride just make sure you drink and cook with fluoride free water. when you take a bath add just a bit of borax as the boron will bind with the fluoride and help nuetralize it. as for showers, take short quick ones. you will be fine.