That creamy yellow or greenish concoction oozing from your scab means your body is fighting off infection. Pus is made of dead white blood cells and dead bacteria. That’s why pus forms where the immune response occurs. If you want to get more medical in your terminology, purulent means pertaining to, containing or composed of pus.
Pus collects at any infection site, such as a cut, a pimple, or in your ear. It’s best not to poke or squeeze, which may introduce new bacteria into an infection. Pus is a sign of your body's ability to fight infections. So just let your pus be!