|Sheikh Maghsoud, Aleppo|
|Carried by a Jabhat al-Nusra fighter|
Several of the gas grenades can be seen here
And they are also held up to the camera, with the camera man stating "poisonous bombs"
Although it's blurry you can still make out the silverish screw and hole present in the Jabhat al-Nusra example
It's also interesting to note a number of improvised devices as well as gas masks
It's also interesting to note that just a couple of miles down the road in Adra last night there was another reported chemical attack (videos here), so it does beg the question of whether or not there's a link. The fact these gas grenades appear to be carried by government forces does seem to support the theory they aren't a deadly chemical weapon like sarin.
In an ideal world one of those grenades would makes it to a friendly news organisation who could have it independently analysed, so if anyone knows how to contact the Abu Dhar al-Ghafari Brigade in Damascus it's a good time to let me know.
Thanks to Johnny Six and Mark for highlighting this video.