

I had the exact same experience. My son became cyanotic since his breathing was so shallow, and then he passes out. For a second I thought he died there and then. Quickly came too. And the ambulance took a wrong turn. Rember running after it. Man, had I had that motivation when young and fit I would have beat Usain Bolt
I had a beard while in (Norwegian combat engineer). You can pull the mask as tight as a homophobic preachers sphincter in a pride parade and it will never be completely sealed. After the first time it was voluntary to pull off the mask while testing using CS, I used to take it off as I was exposed already. In a war situation I would be smooth as Flipper in a second