Literally copying this post/note from a blog post by Nate Good http://nategood.com/quickly-add-and-edit-cookies-in-chrome
If you want to inset a cookie into a website request in Google Chrome, you can do it by launching developer tools (F12 in Windows) and typing the following in the console
javascript:document.cookie="myCookieName=myCookieValue"
Nice!! Thanks for the tip
Thanks!