FLASHBACK: William Thomas, titled Contrails’: Poison From The Sky

This article, by Canadian journalist William Thomas, titled Contrails’: Poison From The Sky was written in 1999:

Washington state resident William Wallace became ill with severe diarrhea and fatigue after watching several multi-engine jets spend New Year's day laying cloud lines in an east to west grid pattern. A neighbor working outside came down with similar symptoms. But their wives, who remained indoors, suffered no ill effects from the inexplicable maneuvers which observers liken to high-altitude "crop-dusting" by unidentifed multi-engine aircraft.

Story Here