Lead is a metal. It was once used in things like paint, china, gasoline, and water pipes. Too much lead can make you, your children, and even your pets sick. Breathing, touching, or eating paint or dust containing lead is the most likely way of being exposed. Dust gets on the hands. It can then enter the mouth, especially in young children who often put objects in their mouth. Children may also chew on lead paint because it can taste sweet.