It can prevent dangerous gas.
It is a part of the Outbreak Set.
How to get
You will easily buy that skin in the Item Shop.
Bonus: The Epic Contagion
It is a costume that owns a blinking distress beacon on it. However, it can help your enemy spot your hiding place.
It was set in the Featured section on May 17th, 2018.
It is the counterpart of Toxic Trooper.