Varies. Usually if you aren't acting yourself/normal. Having different emotions that you can't explain. Such as being suddenly depressed for no reason, or doubtful for no reason, etc.
This is why cleaning the aura daily is so important. They can attatch onto our auras and chakras every new day, as well as come back without consistant cleaning and protection.
Also a reason it is important to clean your room of negative energies and entities regularly.
