When I was a young lad in Muss'burry in the 1960's, a commonly used word for face was 'pus'. (rhymes with fuss)
"Shut yer pus !" was a well-known advisory statement among kids and teens.
I recall one unfortunate teen girl in the year below me had very aggressive acne (but she was popular with the boys due to her readiness to leave them with a big smile) and was nicknamed
"sultana pus" and
"strawberry pus", though she was unaware of it (I think !?)
So where did this venerable (or venereal) word come from ?
Was it the same origin as "puss" as in "sour puss" (puss = pooss) ?