Freakish is a hulu original show about high students trapped inside their own school do to a chemical plant explodes. They realize the air is now deadly so they must find a way to find their families and most importantly, stay alive. The poisoned air is not only dangerous, but once your body becomes infected you become a "freak" or a zombie-like creature who feeds on those who remain alive.
Video-https://m.youtube.com/watch?v=E1npbOr5MGE