"Nerve gas" refers to a highly toxic chemical substance that can harm or kill people when inhaled, absorbed through the skin, or ingested. It mainly affects the nervous system, which controls our body's movements and functions. Full definition
There certainly is something to the horrible death hypothesis, however (although nerve gas agents, in contrast are quite quick). (politics.stackexchange.com)
First responders have also been provided with field supplies of nerve gas antidote, with each ambulance in New York City, for example, carrying 60 Mark I kits, says Neal Richmond, former deputy medical director of the New York Fire Department. (discovermagazine.com)
Kerry was referring to Bashar al - Assad's declared stockpiles of chemical weapons which, under a 2013 deal struck by the Obama administration following a sarin nerve gas attack that brought the U.S. to the brink of striking Syrian government forces, were dismantled and shipped out of the country. (theatlantic.com)