Two things I have seen, one is that some jets are running longer Contrails than usual. Possibly the time of year where we just turn into fall, or maybe they mixed something into the jet fuel. I mean Tellurium in high positive ions is in there all the time anyhow...
The other is speeding Sylphs that look like Chemtrails but aren't...
As you can see once they pick up speed the trail can narrow and look like a Chemtrail. I hear that in some areas the travel faster than the speed of sound, kind of like a dance around the planet: