e claret is more likely. At a bar, once they sort out all the baddies. Because he.is.not.dead.nor.he.will.die.
If he was faking it he was very convincing.
He knew all about sarin and what it does to humans - although you have to ask how... - so he could easily fake it.
I was going to say that I doubted the terrorists would have seen people die from it, as I only remembered an attack in Japan a couple of decades ago. However,
"2013: Ghouta chemical attack; sarin was used in an attack in the Ghouta region of the Rif Dimashq Governorate of Syria during the Syrian civil war.[34] Varying[35] sources gave a death toll of 322[36] to 1,729.[37]"
So, thewritters are quite on the ball with this stuff.
And
"Atropine, an antagonist to muscarinic acetylcholine receptors, is given to treat the physiological symptoms of poisoning. Since muscular response to acetylcholine is mediated through nicotinic acetylcholine receptors, atropine does not counteract the muscular symptoms"
So, he will probably have experienced the muscle response to sarin, but will recover in time, presumably.