Goose
I use one of these
https://www.patrolbase.co.uk/nuprol-balaclava-mesh-mask?fv=22446&gad_source=1&gclid=Cj0KCQjwlN6wBhCcARIsAKZvD5jaemKkNt3eMcxEP64M6fciO3lcGPPBmUvP7fyB981DH6RCSNfSjdwaApMeEALw_wcB
The mesh protects the mouth and nose and the material, while not totally protecting you, helps take some of the sting out of hits to the neck