Chemical weather creation, known scientifically as cloud seeding, uses substances like silver iodide (\(AgI\)), dry ice (solid carbon dioxide). This is the worst conspiracy there is a conspiracy ever. Just google it. Just ask people that dumped it from a plane. The people saying the gov. controls the weather were right, proved tons of times. Just toss up silver iodide, wtf is this hard to conceive?
The same chemical companies that produce pesticides and herbicides that have invested many millions of dollars into online propaganda, bots and social media departments to make people look crazy for questioning the safety of poisons that are literally designed to kill things are the same companies responsible for producing a lot of the substances that get sprayed from the sky. It's not a surprise that it's an effective campaign when they have so much reach. It's also not limited to weather modification - although that is the bulk of it. The other side is the agro industry and the push for GMO crop dominance.
I don't really think this is true. You can say "chemtrails aren't real but weather engineering does concerns me". It's just that many (most?) of the people with the concerns are chemtrails people. It's not like non-chemtrails-believers have weaponized the chemtrails-as-a-belief to protect their precious weather engineering. Although that itself is quite a fun conspiracy :).
Chemtrails are generally just weather modification, which is obviously real and happening. Although that's not to say we've never been sprayed with other things before - and the culprits vary, from military exercises all the way to rival agro companies taking out another companies yield. To pretend like people, organizations and governments don't engage in creative malicious behavior for a wide assortment of reasons is so incredibly naive.
The chemtrails conspiracy is just used to dismiss valid concerns about weather modification