To dream that you are choking on an object, suggests that you may find it difficult to believe some advice, or accept what someone is telling you.
If you are choking on food, then it may be an expression of your guilt about something.
To dream that someone is choking you, means you are suppressing your feelings - you have difficulties in showing your fear, anger, or love. Alternatively, you may feel that you are being prevented or restricted from freely expressing yourself.
If you dream that you are choking a person, you have feelings of aggression towards someone. You may also be trying to prevent something from being said or revealed. Also see “Heimlich Maneuver.”