AGi in cloud seeding emits pollution, how? I'm talking about the ground based liquid propane burning generator?

Silver Iodide AGi is commonly known to be an active seeding agent in cloud nucleation. How does this effect human health when mixed with liquid acetone and or liquid propane in seeding clouds from the ground based generators? And is there a difference with a liquid propane ground based seeding generator and a nucleating ground based generator? What is a nucleating generator? Are they radioactive? I know the heavy pollution these emit are tremendous