Alleged Chemical Attack, April 11, 2014
On April 11, 2014, dozens of locals were effected and a couple died after the town of Kafr Zita, Hama province, was hit with chlorine gas supposedly dropped from a helicopter - alleged video of just that drop was even provided. Both sides accuse each other for a real chlorine attack, and world powers backed each claim as they do. All parties would hold that opinion as dozens of chlorine attacks were alleged over April, May, and through the summer, in different town of northern Hama and souther Idlib province.
A later OPCW investigation would conclude 13 people died from a combined four of these attacks up to July, hundreds were effected, and their opposition sources left them convince chlorine was to blame. Including a few related deaths in the first attack, the total seems to be 14-16, with an unusual 11-13 of those (or all but 3) being reported as IDPs, people previously displaced from other towns by the instability in Syria. Finally they had the bad luck to die from a chlorine gas attack, which is not so easy to do.