Russian UAVs dropped containers with a poisonous substance on Ukrainian combat positions

On September 23, the Russian military dropped containers with a poisonous substance, presumably a K-51 chloropicrin grenade, on Ukrainian positions with the help of a UAV.
The press service of Operational Command "Pivden" ("South") reported about this.
The combat medics did a great job, there are no casualties and people in critical condition among the Ukrainian army.
It is also reported that the Ukrainian military destroyed 4 kamikaze drones in Odesa, including the Iranian-made "Mohajer-6" multipurpose strike UAV.