Sniffers are a type of device used to detect and analyze network traffic. They are also known as packet sniffers or network analyzers. They are used to monitor data packets that travel across a network, allowing the user to identify potential security threats, diagnose network problems, and troubleshoot network performance issues. Noses is an appropriate term for sniffers, as they are used to detect and analyze data packets in the same way that a nose is used to detect and analyze smells.