Be Quiet, Silent, Mute
This is a golden bell with a forbidden symbol. Different platforms depict different emojis. Some platforms use oblique lines to represent prohibition, while others use red circles with slashes as labels. Except that the diagonal lines displayed on OpenMoji platform are gold, the lines displayed on other platforms are all red. In addition, Microsoft and Messenger platforms display black and white bells, while other platforms display golden bells.
This bell is often used to indicate that it is forbidden to make sound. Therefore, the emoji can be used not only to specifically mean please don't make a sound and don't disturb, but also to represent an icon used as mute on a computer or mobile phone.