Body manufactures puss to encapsulate man made industrial chemicals, most of these industrial chemicals contain heavy metals(aluminium, mercury, arsenic, cadmium, lead etc.)in order to reduce their oxidative stress, aka/i.e their acidity.
Puss is just another symptom of a polluted/poisoned/acidic body with man made industrial chemicals/acids/proton donors/electron stealers/free radicals.
No such thing as 'diseases'.
One is either contaminated or not.
'Diseases'' are nothing more than symptoms of a toxic/poisoned body.
Essential oils are full of antioxidants. Poisons are oxidants. That is how essential oils/herbs/fruit/grains 'heal' 'diseases', they provide electrons/antioxidants.