Many years ago I had the luxury of doing quite a bit of work in the largest clean room (I think) in the world at NASA Goddard Space Flight Center.
No, I’m not an astronaut but dealing with Intrusion detection, surveillance, and life safety. I was always blown away by the size, and the high bay height wall of 2’ think filters. @Nicotine_River your clean room is impressive as well. The video was very well done as well, color me impressed.