What chemical agent is indicated by victims with burned or blistered skin and a garlic-like odor?

The presence of burned or blistered skin along with a garlic-like odor is characteristic of mustard gas, also known as sulfur mustard. This chemical agent is a blistering agent that can cause severe skin and eye damage, as well as respiratory problems when inhaled. The garlic-like odor distinguishes it from other chemical agents, as it provides a specific sensory cue to victims and first responders. Mustard gas has been historically used in warfare and is known for its long-lasting effects, making it crucial for disaster planning and response efforts to recognize its signs and symptoms effectively.

In contrast, chlorine gas typically results in respiratory issues and does not possess the distinctive garlic odor associated with mustard gas. Phosgene, while also a toxic chemical, has a musty odor and primarily affects the lungs, causing delayed respiratory distress, but does not cause blistering or skin burns. Sarin is a nerve agent, leading to symptoms related to neurological and muscular control rather than blistering, and it has no characteristic garlic-like smell. Understanding the signs associated with each chemical agent helps in the adequate preparation and response to potential chemical exposure incidents.