This assumes it wasn’t a false flag operation.
As of now, the US govt position is still that it relied on social media “evidence” from Al Qaeda-affiliated White Helmets and Syria rebel medical arms funded by Soros.
A key “victim” shown in the video is an 11-year old. He has now gone public on video saying that he was given good and gifts to go to the hospital room where the White Helmets sprayed him with water. He says there were no chemicals and he was simply doing what he was told.