Squid ink is a dark cloud left behind to cover an escape, read as confusion created on purpose and things obscured so that a retreat can happen.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.