How can I make some fake vomit, as odorless as possible?

I am dressing up as possessed reagan from the exorcist for halloween. I want to add a little bit of fake vomit on my face and some on my clothes. I know they used pea soup in the movie, but I am trying to make it as odorless as possible. Any suggestions on how to make some? Nothing too much, just enough to put on my face to appear to have thrown up.