GR, with BEagle on this. The more I see that chemical decontamination video the more false it seems.
When doused in an unknown chemical one's first reaction is to strip off your clothes and then douse with water.
In the video was this a second wash down? Those doing the washing took no precautions against contamination.
Now it should not be a case of untrained and unknowing civilians treating the casualties, chemical has supposedly been in use in the region for years. They should be aware of precautions.