How do you remove malathion from your hands?

Soap and water works well. Malathion is not really dangerous to humans except in fairly high concentrations. When California was spraying malathion to control the Mediterranean Fruit Fly, Assemblyman BT Collins once drank a jar of it to demonstrate its safety.

However, if you begin to experience tremors or muscle spasms, you should go to the Emergency Room and let the doctors have a look at you.