Human Versions & Aliens? | Floating & Flying Myself & Others & Objects

Dream 1

This dream took place inside a building with many people (humans & later what seemed to possibly be various old versions of humans & modified humans & non-humans, some were possibly aliens, and some were possibly human-like entities), and this building felt deep like it was underground with probably different floors that I did not have access to like a hidden secure facility of some kind that we were trapped in (it felt like there was probably almost no way for us to escape).

At some point I found some wood chips covered in a chemical with a very strong smell that made it seem harder to breathe, like it sucked the oxygen from a room, and so some people scattered them in various trash cans outside the various buildings & rooms to try to avoid putting them in one location so that it would not suck out the oxygen & possibly kill people.