Will smoking the hookah cause u to have nightmares?

No: But, in an hour-long smoking session of hookah, users consume about 100 to 200 times the volume of smoke of a cigarette. The chemical compositions of cigarette smoke and hookah smoke are different, however, as the charcoal in the modern hookah causes the tobacco mixture to be heated to a lower temperature, as opposed to the higher temperature in a cigarette. En.Wikipedia.Org/wiki/hookah.