Lamp oil being a pH germ killer was used in ancient times without knowing it killed germs because they didn’t know germs existed. Wounds healed and people lived when they used the lamp oil.
That, and Honey worked wonders.
Ambroise Pare, one of the Fathers of Surgery used oil made of egg yolk, oil of roses and turpentine to dress wounds in the middle ages because lamp oil was too expensive. He adapted it from Roman practices.
Would that be 'current' lamp oil or when lamp oil = whale, dog fish, olive oil?
I know part of the Roman Soldier's 'rations' was garlic - used for energy but also for medicine, the same as it was in WWll - pass the crushed garlic over a wound and the oily vapor would kill even gangrene -
A Roman soldier caught without his garlic was disciplined