BuddyPress.org

Profanity filter? There was something but I think it was WP post specific but should be possible to achieve with a little work for BP aspects.

There is this:
https://wordpress.org/extend/plugins/webpurifytextreplace/
But it is a paid for solution and although it states BP support it is a little outdated so would need checking with authors as to whether it would work with alter BP versions.