The "☣️" or "Biohazard" emote is a symbol used to indicate the presence of dangerous, infectious, or toxic materials. It is often associated with hazardous waste, radioactive substances, and biological hazards such as viruses or bacteria. The symbol features a stylized image of three interconnected circles, with the central circle containing a stylized depiction of a skull and crossbones. Its use is primarily seen in warning signs, labels, and other safety-related contexts.