Because it can cause disabilities <span />
Pus actually contains white blood cells, fluid, and cell debris. So when pus forms, it indicates and active and at least a partially successful inflammatory response against invading microbes.
An adverse reaction to a food or food ingredient in which the immune system perceives a particular substance as foreign and acts to destroy it. An adverse reaction to a food or food ingredient that doesn't involve the immune system; these are often caused by a problem with metabolism
