Could hookah vape pens contain tobacco/nicotine?

Not tobacco: But the cartridges contain a liquid form of nicotine that is vaporized by the device. It can be dangerous if ingested, particularly by children.

Yes: Per the Mayo Clinic: "smoke contains high levels of toxic compounds, including tar, carbon monoxide, heavy metals and cancer-causing chemicals (carcinogens). In fact, hookah smokers are exposed to more carbon monoxide and smoke than are cigarette smokers." REF: https://www.mayoclinic.org/healthy-lifestyle/quit-smoking/expert-answers/hookah/faq-20057920