Ians,
Well you may wish to test such protection in an environment containing an unidentified agent. I do not think I would.

That is what all NATO militaries wear for NBC protection including against nerve agents.
I have been in a CS gas chamber in such kit many times. You know when it leaks. If you fit it correctly it does not.

Those pictures have been around the world. Apart from a few conspiracy nuts, no-one has found them untoward.

Dave,
The subsequent mismanagement of the whole affair by our government is an absolute disgrace.

What mismanagement? All the parties support the government's action.

Not everyone who has the known facts is convinced so there is an element of doubt.

Who?

Steve,
I predict that this story will not run and not run.

Ha ha ha.
It has started a global crisis that is still growing!
As with Labour's anti-Semitism problem and every other issue, I was right all along (notwithstanding all your name calling , abuse and ridicule.)