These are the most common ghosts. They are loved ones who are returning to bring you comfort or to convey important information they believe you should know. These ghosts can emit a scent like perfume or cigarette smoke in order to help you sense their presence. They can also make noises and might even speak to you.
Interactive personalities retain the same personality that they had when they were alive and can still experience emotions. These ghosts are friendly and return because they know you need to see them again, they know you need their help.