If it's the "logged into multiple google accounts at once" that's confusing, you could leverage the "users" feature in Chrome or Chromium.
Go to the settings area, and you'll see a Users area where you can add new users. Add one user per unique google account and give them descriptive names. You'll then get an icon in the upper-left corner of the browser window that you can use to switch between users.
It's essentially creating a separate namespace for cookies, one namespace per user.