real dream

what kind of dreams are they when you actually feel, smell, taste and when you wake up from the dreams you can still feel it for a little while. Like having pieces of plastic from a container that broke in your dream in your mouth and when you wake up you can still feel it and your mouth feels scratchy from it. I have been having a lot of dreams like this lately and also they happen when i am trying to take a nap which is about 1 hour long or so. Thank you for your time.