A sentence for fester?

Puncture wounds are most likely to fester. Has last week's laceration begun to fester for you?

I fester in this class while the other kids are allowed outside to play.

Water left to Stagnate will soon fester and smell

My bloody cut would not stop festering.

A sentence is a sentence because it has a subject (noun or noun phrase), a predicate ( verb) and punctuation as well as the other parts of speech like pronouns ( she, it him, her, they, them)...