My question was more about other compounds, for example those involving fluorine (https://en.wikipedia.org/wiki/Fluorine#Atmosphere https://en.wikipedia.org/wik

My question was more about other compounds, for example those involving fluorine (https://en.wikipedia.org/wiki/Fluorine#Atmosphere https://en.wikipedia.org/wiki/Fluorine#Atmosphere). I have not asked about F specifically because that is known and in decline (I think), but there may be other things in the air that specialists know better.