Oh what these conjures up in the imagination when thinking of movies and TV series shows.
Our's are for mold removal. Keeping the bad spores trapped inside until we can tear out their habitat and catch them in HEPA filters.
By the way, HEPA stands for "High Efficiency Particulate Arrestance" or "High Efficiency Particulate Air". Quite the mouthful and most people have forgotten the full name.
The containment shown covers a ceiling over 12 ft tall and using two machines for negative air pressure and then air scrubbing.
Negative air is used to pull air out of the room right through the HEPA filter and exhausting 99.97% particular free clean air. Scrubbing the air is done after the demolition and keeps the air inside the containment inside the containment. The air is repeated forced through the HEPA filter and returned to the room(s) "scrubbing" the air.
The look of this containment captures one's imagination.
It also captured the spores necessary to pass a post remediation testing.