Permanent AO3 Seach Filters
This is a tampermonkey browser extension which allows you to permanently enable an ao3 search filter (such as include explict works or exclude works with warning underage).
To install the extension you first need to install tampermonkey:
Once tampermonkey is installed, click this link to install the script https://gist.github.com/BrickGrass/505cbc1824bd6e98cbf2c52bb8cb4975/raw/a4351ce09bccaf08ae530a32c28b50a91d61b32f/permanent_ao3_search_filters.user.js