The Syria Tribune: The video starts with several scenes showing chemical containers with Tekkim labels (Tekkim is a Turkish chemicals company) and some lab equipment, while playing Jihadists chants in the background. A glass box then appears with two rabbits inside, with a poster on the wall behind it reading The Almighty Wind Brigade (Kateebat A Reeh Al Sarsar). A person wearing a lab mask then mixes chemicals in a beaker in the glass box, and we see some gas emitting from the beaker. About a minute later, the rabbits start to have random convulsions and then die. The person says: You saw what happened? This will be your fate, you infidel Alawites, I swear by ALLAH to make you die like these rabbits, one minute only after you inhale the gas.
Judging from the rabbits’ reaction, the gas must be a nerve agent. The number of containers, if not a bluff, indicates ability to produce a considerable amount of this gas. Deployment could be by means of a smoke generator placed in the target area, an explosion, possibly a suicide one, of a “chemmed” car, or simply by using a humidifier.