Ukrainian drone drops some type of smoke projectile in Russian dugout, Ukraine, 2023

This is a K-51 CS gas grenade:

Here is it being used by 109 OGSHB about 3 months ago to great effect:

Regular smoke grenades are usually in a metal canister. There is nothing wrong with using military grade cs on the battlefield.

The Russians although have been accused of using it mixed with chloropicrin (chem agent from ww1). You can read about that here, it's pretty interesting:

/r/CombatFootage Thread Parent Link -