I too have experienced DMT in a dream, once. I was a regular consumer of oral DMT and Harmalas for 4 years and then occasionally for another year, and i've only ever had one dream in my entire life that was like this. In the dream me and two friends were walking down the street and as we walked towards this place down the street from my house i heard music and saw there was a concert or something going on, and then i saw a woman on a motorcycle driving down the road with an Ayahuasca sticker on the bike and i was like "music, Ayahuasca, i'm on Aya right now, i wanna dance!" lol, next thing i know i'm being blasted off into DMT land, it only lasted like maybe 30 to 45 seconds or so but it felt just like DMT except no intensity and i saw bright colors and lights and patterns and such which i usually don't get closed eyed visuals or anything like that from DMT, smoked/vaped or orally, and then i woke up and was like "holy shit! i just experienced DMT in a dream! AWESOME!" lol. Never happened before or since, so it was definitely a one of a kind, kind of dream.