That is for private propeller aviation mostly. While I'm no 'chemtrailer' (as in believing intentional 'spraying' for whatever reason by them), searching for 'toxicological asessment' of jet fuel A1(civil), and JP5/JP8 for the most common military ones can be disturbing, to say the least.

Start with https://en.wikipedia.org/wiki/Jet_fuel if you want to. And from there on to https://en.wikipedia.org/wiki/JP-8 and learn that they use this in military diesel powered vehicles on the road, too!

Yummie!