Pus is an indicator that your body is functioning well and that your white blood cells are actively fighting infections within or on your body. Pus is a slightly thick fluid, usually cream in color, but may be yellow, brown or green at times. Some excreted pus can have a bad odor to it.
As the white blood cells are fighting off an infection, they may kill of most of the bacteria, but they are also destroyed and are too weak to continue staying in the body so they are secreted out of the body through pus. So pus is made up of the debris of the fight against an infection, this includes proteins, dead skin cells, bacteria and white blood cells. If this accumulated debris stays in the body, the infection could get worse and a build up of toxins may occur. This makes it necessary for pus to leave the body.
As pus is filled with bacteria struggling to cause havoc to the body, an antiseptic must be used to wash all wounds. Even after squeezing a pimple containing pus, take care to wash your hands thoroughly as the bacteria could stay on the fingers and re-enter your body.
As long as a wound is kept clean and dry, the pus that comes out is a healthy sign. However, if the wound grows bigger with an increase in pus and is soft and hot when touched, this could be a sign that the white blood cells are struggling to fight the infection and may require assistance from a course of antibiotics.