Chemtrails are nothing more than a ridiculous made up conspiracy theory, generally coming from individuals who have to have failed high school science. The chemtrail conspiracy theory says that the normal longer lasting condensation trails (contrails) from aircraft are “chemtrails” that contain chemical or biological agents left in the sky and are dispersed for dubious purposes. The ones that believe in this concept (chemtards) claim that whilst normal contrails dissolve somewhat rapidly, contrails which linger need to contain additional chemical compounds to ensure they endure longer. These people speculate that the purpose of the chemical release can be for some sinister and not so threatening reasons including management of solar irradiation, weather conditions manipulation, psychological manipulation, control of the human population, biological or chemical warfare. They also claim that the chemtrails are triggering respiratory system conditions along with other medical conditions in the population.
Most of the assertions produced can easily be thrown out and the scientific community have discussed contrails and disregarded the conspiracy theory. You can find basically no evidence which the supposed chemtrails differ from normal water dependent contrails that are typically left by high-flying aeroplanes under specific atmospheric situations. The conspiracy theory is persistant despite scientists and government agencies all over the world having repeatedly spelled out that the supposed chemtrails are only in fact ordinary contrails. This doesn't seem to have made any difference to people who have faith in the conspiracy theory.
A way of thinking about it, is that if it was real, then this would need to happen to be agreed to by each and every nation on the planet. Each and every main airline in the world would need to consent to spray them. This certainly will involve large numbers of pilots and airport terminal workers, weather conditions forecasters and experts, each and every University which has a meteorology or environmental science division and every company that monitors air quality. They would all have to say yes to remain silent. This might be an unparalleled global endeavor and co-operation which the person who is behind it, if this was true is deserving of a Nobel prize. Nobody who is convinced in the conspiracy theory of chemtrails (ie the actual chemtards) has been willing to reveal how this exceptional co-operation is actually operating with not one person spilling the beans about it.
An additional method of looking at it will be simply the infrastructure of supplying the chemtrails if it was true. It has been estimated what would be required to just spray the United States with all the alleged chemicals which are alleged by the chemtards as being utilized. It had been determined that the federal government would need to schedule 4 million 747 flights to distribute their chemical compounds every week for this to work. That's 18 times additional air flights per day than in the entire US. In addition to that their will have to be the infrastructure and personal to help with this type of huge venture (that would also have to keep quiet about what they are doing). Additionally, this will only be for the USA and a equivalent systems will be required for each and every country on the planet. Probably none of these believers in chemtrails has been able to explain this.