When a city is cloud seeding for rain, is it possible that the stuff they are dropping in the air can turn into a gelatinous pile of gunk?

When a city is cloud seeding for rain, it might be possible [...] the stuff they are dropping in the air can turn into a gelatinous pile of gunk; however ... it's much more likely the gelatinous pile of junk came from a malfunctioning toilet aboard a jet airliner.

It's not as if it hasn't happened before.

Perhaps, but then, you'll have to tell me what makes water to turn into a gelatinous pile of gunk.

Usually what is used for cloud seeding is, silver iodide. It works as a condensation nuclei on which moisture condenses to form droplets of water.

But cloud seeding is no guarantee that it will rain. The cloud must already be over-saturated. Then, it may cause a rain that never reaches the ground, as it is the case for what we call, virga rain.

In any case, apart from Beijing, in China, where they tried cloud seeding to unsuccessfully remove the fog, during the last Olympic Games, cloud seeding has only been done for agricultural purpose.

No.

Silver iodide, potassium iodide and dry ice are commonly used for cloud seeding with silver iodide being the most widely used for seeding. None of the chemicals turn into gelatinous matter.