To dream that you are vomiting, indicates that you need to reject or discard an aspect of your life that is revolting. There are some emotions or concepts that you need to confront and then let go.

To see others vomiting in your dream, signifies false pretenses of people who try to take advantage of you; someone who seemed nice is actually lying to you.

If it is blood you vomit, you will become ill, gloomy, and your children and home-life will work against you.