[dforest]

Supposedly chlorine gas.

[philman_36]

Supposedly chlorine gas.

Quick search turns up several attacks using it.
How chlorine gas became a weapon in Syria's civil war 23 Mar 2017

"We saw chlorine appearing as a weapon in Syria for the first time in 2014," said Ole Solvang, the deputy director of the emergencies division at Human Rights Watch.
snip... In February, Human Rights Watch and Solvang authored a report documenting at least eight instances of chlorine use by the Syrian regime in the battle for Aleppo between Nov. 17 and Dec. 13, 2016. The human rights watchdog verified the attacks through video footage analysis, phone, and in-person interviews, as well as by social media.

The video isn't proof and social media can be manipulated, IMO.
Releasing it could have just as easily been done as an attempt to prevent a military push.

I still go with it's the rebels doing it themselves...a 'sympathy for the cause' attempt.

[Bigg Red]

Thanks. If chlorine gas, how will it help to squirt water on the victims’ faces? Doesn’t the chlorine kill you because it goes into your lungs?

The whole thing seems like a hoax to me.