Only the military jets produce the horrific odors and tastes in the air. The commercial jets do not produce this taste and odor. They only smell like jet fuel.
I have been tracking this for nearly 20 years now and I can tell you that commercials jets are clearly using something in the fuel that produces trails, but thisis likely only done to convince the world that high bypass jet engine produce trails.
Just think what would happen if military jets produced trails and commercial jets didn't when both use the same engines types in most of their aircraft.