Not to me. I usually have good memory for dreams and I´ve had times in which I didn’t remember my dreams and it’s not being because of the smoke. In fact I used to experiment with myself and smoke before taking a nap and I´ll set my alarm for an 1hr, wake up in the middle of a dream, became aware of it and slept for another ten minutes and again if a can for a couple of more times. At some point I´m fully aware I´m dreaming and I wake up with lots of details. I used to smoke every Saturday and Sunday after breakfast and go to sleep again and I´ve had amazing dreams. I still do every now and then