I have a script that I found somewhere and have made personal tweaks to: https://pastebin.com/RJf9kajk Put it in a file called sub-clean.sh and check the instructions in the script on how to add it to bazarr

I have not noticed any issues with it, but there can of course be false positives (like someone saying the word "Facebook" in a series/movie), so your miles may wary. (this is why i leave the .trash.tmp file personally, so that i can restore the removed lines if needed)

and as always, this script is provided as is, but it might help someone out there