A lot, particularly in the fourth and fifth segments, and in one of the wraparound segments. If this is something that bothers you at all, I especially wouldn’t recommend watching the fourth segment (Kidprint)
A lot of vomiting black sludge through V/H/S Halloween, in the wraparound segment and one other, I believe.
During Coochie Coochie Coo, there the sound of heavy gagging/choking on milk with graphic visuals to liquid pouring from a mask around a mouth which resembled vomiting, which mildly triggered me.
Enric comments that his stomach hurts but nothing happens, but later vomits eyeballs during the spanish segment. Graphic depiction of vomiting something up and gagging.
In 'Fun Sized' - Haley comments that she feels sick but nothing happens