What is the smell characteristic of cyanogen chloride, a CK blood agent?

Cyanogen chloride is known for its characteristic irritating odor, which is a notable feature that can alert individuals to its presence. This chemical compound can cause sensory irritation upon exposure, affecting the eyes, nose, and throat, which is critical for early recognition of potential danger.

This irritant quality is significant in contexts such as chemical warfare or industrial accidents, where detection plays a vital role in safety protocols and emergency responses. The other options describe odors that do not accurately reflect the nature of cyanogen chloride, thereby emphasizing the importance of understanding the specific characteristics of hazardous substances for effective recognition and safety measures.