Some Obscurish facts
#633
For those who think nothing good ever comes from cockroaches, during the Vietnam War, the U.S. used cockroaches to detect farmers who were doubling as Communist guerrillas. First, suspected Vietcong guerrilla meeting places were sprinkled with synthetic female cockroach pheromones. Then, questionable Vietnamese farmers were made to walk slowly past cages containing male cockroaches. If a farmer had visited the meeting place earlier, the female scent on him would make the male cockroaches react.
For those who think nothing good ever comes from cockroaches, during the Vietnam War, the U.S. used cockroaches to detect farmers who were doubling as Communist guerrillas. First, suspected Vietcong guerrilla meeting places were sprinkled with synthetic female cockroach pheromones. Then, questionable Vietnamese farmers were made to walk slowly past cages containing male cockroaches. If a farmer had visited the meeting place earlier, the female scent on him would make the male cockroaches react.