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Derisive term for someone who believes in the Chemtrail Conspiracy Theory. The original meaning was directed at people who are poor at chemistry. The Chemtrail Conspiracy Theory holds that government planes are either seeding clouds to counter global warming or spraying mind-altering or health-altering chemical substances on unsuspecting populations around the world. Chemtards believe plane contrails (condensation ice crystal trails) are actually "chemtrails" (chemical trails), hence the name.
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