Biohazard

This emoji is not particularly popular, as it is not widely used in everyday conversations. It is most likely to be used by older age groups, as it is more of a warning symbol than a fun emoji.

This emoji is most commonly used on Twitter and other social media platforms. It is not considered to be a rude emoji, but rather a warning symbol.

The biohazard symbol was first used in 1966 by Charles Baldwin, an environmental-health engineer at the Dow Chemical Company. The symbol was created to warn of potential danger in the workplace, and it was later adopted by the International Organization for Standardization in 1970. The symbol has since been used in various contexts to warn of potential danger, and is now commonly used in social media conversations.