A hazardous atmosphere refers to an environment where the air contains harmful substances that can pose risks to health and safety. This can include the presence of toxic gases, flammable vapors, or insufficient oxygen levels. Such conditions can occur in various settings, including industrial sites, confined spaces, and areas with chemical spills. To ensure safety, it is crucial to monitor air quality and implement protective measures. Tools like gas detectors and ventilation systems are often used to identify and mitigate hazards. Workers in potentially hazardous atmospheres may also need to wear personal protective equipment (PPE) to reduce exposure risks.