👉 The "Windsor Fumes" refer to a series of mysterious and often unexplained incidents that occurred at Windsor Castle, the primary residence of the British monarch since 1183, particularly during the reigns of King Henry VIII and his successors. These fumes are believed to have originated from a chemical plant located on the castle grounds, where various industrial processes released volatile organic compounds (VOCs) into the air. Symptoms reported by those affected included headaches, dizziness, nausea, and respiratory issues, often accompanied by a distinctive, acrid odor. The exact cause of the fumes remains debated, with theories ranging from industrial accidents to deliberate sabotage or even supernatural explanations, but the most widely accepted theory points to human error or negligence in managing hazardous chemicals on the castle's premises.