"Hazmat man" refers to an individual, typically a scientist or technician, who is trained and equipped to handle hazardous materials. They wear specialized protective clothing, including a full-body suit, gloves, boots, and a respirator, to ensure their safety while working with potentially dangerous substances. The 👨‍🔬🧪 emoji represents this hazmat man, symbolizing their role in scientific research, testing, and containment of hazardous materials.