Where do you live? If you live on the West Coast where we are experiencing a draught you could be hearing natures spirit warning of the wildfires that will most likely come in the months ahead!
Many a time I've been woken up with warnings. I perceive this to be a warning to you. Do not ignore it or dismiss it lightly. If you smell smoke but there is no smoke than you are perceiving a type of energy that is trying to stifle you and does not want you to awaken any further. Be aware of your surroundings and take great care of flamables. Those red letters should give you a clue as to the urgency here.