He went psychotic over the question of mask efficacy when this is so anciently settled matter in fact!
The Masks Are For Surgeons And Anyone Cutting Open Living Bodies Wanting To Avoid Causing Infection.
That's what my medical training for body piercing said and I doubt it's any different in any credible medical training establishment.
If someone's spit is that deadly you need an NBC suit. A mask is like a giant gate with spikes all over it only in front of the paved driveway into your property.
The Masks Are For Surgeons And Anyone Cutting Open Living Bodies Wanting To Avoid Causing Infection.