Recently, Russian forces have begun deploying Shahed drones that carry hazardous toxic agents.
Source: Information Center for Countering Disinformation on Telegram
Specifically: "The Center has verified this information through intelligence services and the State Emergency Service of Ukraine. It has been found that one of the drones contained a capsule with concentrated military-grade toxic substance "CS" (irritant). This is a highly toxic substance that causes irritation".
Details: The Center for Countering Disinformation noted that enemy drones might disperse toxic capsules to harm civilians.
However, the claim that the bodies of Russian drones are treated with toxic substances is not confirmed.