HTML gets parsed

[sankety]

The colonToSmiley filter applied at ng-bind-html parses the complete html, which results in <script></script>tag bug.

<span ng-bind-html="message.content | colonToSmiley " style="white-space: normal;"> </span>
And also unable to send '<' less than character
Is there any other way to use colonToSmiley filter without the need of ng-bind-html ?
Any help would be appreciated
Thanks.