The tag alias #75707 sound_warning -> loud_sound_warning is pending approval.
Reason: It's been year since sound_warning is misuse by people who use it to say that sound is present instead of using it to warn about a loud sound to be present at one moment compared to the rest.
The use is precised in the wiki but people don't looks at it and some even don't know that a "sound" tag exist instead to say when there is sound.
sound_warning being put at first in the list of tags (to warn people) make it worse, as it make people know about the existence of the tag without them to always check what it mean.
So a more explicit tag needs to be used.
This has been discussed in topic #41399, but no-one opened the alias request and I don't know how to make it in the same topic. So I make the request here and link to the discussion.
There are others possible name like "loud_sound", "warning_loud_sound" but E621 has no voting system. I propose that people say in comments if they have preferences.
I don't know if people should wait for comments results (a few days maybe) before saying yes/meh/no to this request. If nothing clear emerge, just choose your vote on the loud_sound_warning request depending on if you think it's a clearer tag than sound_warning.
Updated