Sarin isn't a persistent nerve agent.
Well professor, presuming victims were contaminated with sarin while clothed, how long would you wait before touching and removing their contaminated clothing?
PS: It wasn’t sarin or a whole bunch of first responders and doctors would be dead, based on those pictures of them walking around the scene barefoot or in sandals, handling and touching clothed victims
Has the world yet lost a White Helmet responding heroically to recover someone elses children (where were the mothers anyway?) from a CW attack with no protective gear except a bandanna?
The crisis actors should at least have been issued gloves to make it look a little bit realistic