http://www.breitbart.com/national-se...02/13/3025891/

Eyewitness Describes Islamic State Chemical Attack on Kurdish Peshmerga

Eubanks stated that thirty Peshmerga became very sick, had difficulty breathing, some vomited and had stinging nose and eyes. “They were evacuated to the clinic in Sinjar town and treated there. They recovered and returned to duty,” he wrote.

Writing in an email, Eubanks stated that they “photographed both sites immediately after the attack (we were giving medical training nearby), and there was a strong smell of rotten vegetables, and there was a burning in our noses and eyes” and said it smelled like chlorine and sulfur. “There was a black tar like substance around the impact area of the chemical round. The Peshmerga also told us that theses were chlorine gas shells” he wrote.
http://dailycaller.com/2016/02/12/ci...s-to-the-west/

CIA: We Need To Stop ISIS From Smuggling Chemical Weapons To The West

The Associated Press reported in November that U.S. and Iraqi intelligence officials believe ISIS is setting up a chemical weapons development branch, drawing on local scientists in Iraq and Syria. At the time, U.S. intelligence officials stated that ISIS had used mustard gas against Kurds in Iraq. This was determined through an analysis of mortars. In response, Iraq has equipped its forces with gas masks, and Russia has also provided 1,000 protective suits to Iraqi troops.
It also describes the nexus between ISIL and various smuggling networks (criminal-terrorist networks mutually supporting). While they don't seem overly competent yet, even a largely failed chemical attack in Europe or elsewhere in the West would likely have a significant psychological impact.