Admittedly I've been very skeptical about so-called chemtrails. But I've also cleaned the residue from jet exhaust off the waterline tiles of my pool, which I had to do at least once a day. When I had a pool that wasn't directly below flight paths, I would only have to scrub the waterline tiles once or twice a year.
I don't know about the chemistry, but I do know about the physics (thermodynamics). Water vapor wouldn't disperse like that, much less visibly as it would reach thermal equilibrium with the surrounding moisture in the air.
Admittedly I've been very skeptical about so-called chemtrails. But I've also cleaned the residue from jet exhaust off the waterline tiles of my pool, which I had to do at least once a day. When I had a pool that wasn't directly below flight paths, I would only have to scrub the waterline tiles once or twice a year.
I don't know about the chemistry, but I do know about the physics (thermodynamics). Water vapor wouldn't disperse like that, much less visibly as it would reach thermal equilibrium with the surrounding moisture in the air.