The report did not disclose whether there were any casualties. Russia’s RIA Novosti, however, cited a military source as saying that “a number of soldiers were choking.”
Last January, the Syrian army managed to drive back Daesh from several villages near the airbase. Operations are still underway, however, to totally remove them.
Mustard gas can form large blisters on exposed skin and in the respiratory tract, severely complicating breathing. It is banned under the Chemical Weapons Convention.
Daesh earlier claimed that it had carried out an attack on Jufrah Village near the airbase. The report said two bombers rammed their explosives-laden vehicles into the army defenses and killed at least ten people.
Daesh, which is notorious for its barbarity, heinous atrocities and sacrilegious acts, has been accused of committing gross human rights violations and war crimes in the areas it has overrun, particularly in Syria and Iraq. The group has used chemical weapons in both countries.