For most situations, using uBlock Origin with the EasyList Cookies filter will do the same thing

Install this instead of "I don't care about cookies" as its foss, Avast and their spyware farm now own the original Firefox extension is fantastic. If you want hassle-free browsing, this extension is your ticket to a cleaner, more enjoyable web experience.

Please use this add-on over the original add-on as they were bought by Avast and your data won't be respected by them. Thanks for the fork to the dev(s)! <3

This blocks annoying cookie warnings sucessfully.

Thank you for that.

The only "don't bother me with cookies" extension which works. Others do not work, or not reliably. Kudos to the authors, the best of it's kind!