Russian TV news/propaganda crew in Douma, Syria, apparently found the boy who appeared in the video where they were washing his face after he was allegedly gassed, among other victims:

He basically tells how some rebels screamed at him and others to get into the hospital, where he was grabbed and some other weird people threw water and such in his face for no good reason lol

Who knows... Could be the rebels did stage the whole thing. Or, perhaps, there is a thug, from Wagner or some Assad militia, holding a gun to his mother's head, off camera... God only knows...