First post, sorry if this is in the wrong category.
Title is pretty much it. You can blacklist the tag 'oral_vore' however that will only blacklist images in which characters are in the process of being eaten. Images such as this (https://e621.net/posts/2586478) that in my opinion clearly show a scene of the aftermath of oral vore still will be shown. If you blacklist 'after_vore' you end up blacklisting images that show a scene of the aftermath of cock vore. I am stumped on how to properly blacklist so any help would be appreciated.