This mod is literally useless, it just adds the gas mask itself from enviromine and its filters for crafting.
I really liked the idea from the original mod soooooooooooooooo, I took the matter in my own hands and made a mod myself for this.
The mask itself has the breathing sounds and an overlay when worn, when it comes to defense it's just a bit better than the iron helmet and can be repaired with iron.
The mod was made in MCreator and all the textures and sounds were ported straight from EnviroMine.
Just in case someone is annoyed by the overlay download the mod version without it.