Embarrassment in a dream usually centers on social fear -- a moment where you're seen doing or being something you'd rather have kept private, in front of people whose judgment matters to you. It often surfaces around real self-consciousness, a worry about how you're perceived that's bigger than the specific scenario in the dream itself.
The work done to obtain perfumes and to recite invocations is better than the work done with precipitable gases and other spirits. - Picatrix (Andalusia, ~1000.AD)