To dream that you are vomiting, is a sign that you will be getting sick, or that you will be connected with a scandalous rumor or situation. Alternatively, it means that there's some situation or person that you feel uncomfortable with. If it is blood you vomit, then it signifies illness, discomfort, and sorrow.

To see others vomiting in your dream, suggests that you need to be aware of the false appearance of others who are trying to take advantage of you.