What color of smoke is emitted by exotic chemicals or hazardous materials?

The emission of yellow-green smoke is indicative of the presence of exotic chemicals or hazardous materials. This particular color is often associated with toxic substances, specifically those that can release chlorine gas or similar compounds when ignited or when they react with other materials. The yellow-green hue serves as a warning sign that there could be dangerous and potentially lethal elements in the environment, prompting the need for caution and appropriate safety measures by first responders. Understanding the color of smoke and its implications helps firefighters and emergency personnel make informed decisions regarding safety protocols and containment strategies in hazardous situations.