ψέκι → chemtrail believer, conspiracy theory believer, conspiracy theories believer
ψεκασμένος → sprayed, sprayed upon, chemtrail believer, conspiracy theory believer, conspiracy theories believer
peddler
(figuratively) A fake-news disseminator; A conspiracy-theory propagator.
peddler - WiktionaryCrank is a pejorative term used for a person who holds an unshakable belief that most of their contemporaries consider to be false. Common synonyms for crank include crackpot and kook. A crank belief is so wildly at variance with those commonly held that it is considered ludicrous. Cranks characteristically dismiss all evidence or arguments which contradict their own unconventional beliefs, making any rational debate a futile task and rendering them impervious to facts, evidence, and rational inference.