Well, there are cookies and then there are super cookies. Not sure if this relates to the question (or the one that was intended.) Here are a couple links that might be appropriate. I am not at home or I would share with you a Firefox add on to specifically remove super cookies. Or, at least the ones that were around before. It would appear they might have become more pugnacious. 
What is a Super Cookie? - Definition from Techopedia

|   |
|   |  |   |   |   |   |   |
| What is a Super Cookie? - Definition from TechopediaSuper Cookie Definition - A super cookie is a type of browser cookie that is designed to be permanently stored on a user’s computer. Super cookies are... |
|  |
| View on www.techopedia.com | Preview by Yahoo |
|  |
|   |


New Breed of Super Cookie Defies Removal – Almost…

|   |
|   |  |   |   |   |   |   |
| New Breed of Super Cookie Defies Removal – Almost…Let us help you learn how to tame these mysterious and pernicious cookies. |
|  |
| View on www.fightidentitytheft... | Preview by Yahoo |
|  |
|   |


'Super cookies' can track you even in private browsing mode, researcher says

|   |
|   |  |   |   |   |   |   |
| 'Super cookies' can track you even in private browsing m...Think you're safe from sneaky advertising companies tracking you when you're in private or incognito mode? You might not be. |
|  |
| View on www.pcworld.com | Preview by Yahoo |
|  |
|   |

  Now, of course, if I had all my bookmarks saved to the cloud I could access the link for that FF add on from the computer I am on. But I don't like my stuff to be trackable or in a potentially unsafe place . . .
Bruce Lund
      From: llmiller <[log in to unmask]>
 To: [log in to unmask] 
 Sent: Thursday, April 16, 2015 11:12 PM
 Subject: Re: [PCBUILD] cookies
   
Jacob - cookies have nothing to do with cookies. Cookies have been
around long before JS became vogue. The best way to keep cookies from
being set is to set your browser not to accept cookies usually found in
the preferences.

Larry Miller


Jacob Wrote:

Date:    Tue, 14 Apr 2015 23:09:18 -0500
From:    Jacob Smith <[log in to unmask]>
Subject: cookies

If a user disables javascript in their browser? Is there any way a cookie
can be set? In other words, is there a way to set a cookie without
javascript, or do some browsers allow exceptions for cookie-setting
javascript?

--
 Blessings,
Jacob Smith

                          PCSOFT's List Owners:
                      Bob Wright<[log in to unmask]>
                        Mark Rode<[log in to unmask]>



                          PCSOFT's List Owners:
                      Bob Wright<[log in to unmask]>
                        Mark Rode<[log in to unmask]>