Chemtrails aren't a thing. What you're seeing are condensation trails that form and are visible under certain meteorological conditions at certain altitudes. The idea that someone is flying thousands of planes every day as part of some chemical spraying agenda is patently absurd, and has absolutely no evidentiary basis. These are the claims of conspiracy theorists who don't understand what they're seeing, and are concocting elaborate stories that make sense of well-known and understood phenomenon.