E.B.
My kids have thrown up just about every different sort of smell you could not want to imagine. Spaghetti/Spaghettio's being the worst!
It is going to smell however the food mixed in the stomach....plus stomach acid. Whatever they drink on top of it.
My kids were hit with the stomach bug first. That last a week once gone through all my kids. The following week we all had the full blown flu flu.
Just keep hydrated