The image of the spraying of some kind of chemical by people in biohazard suits with a tank on their backs has constantly struck me as very other-worldly this past year. It was (and is) seen often in news footage from many countries though (mostly Asian, African, and South American I think), but it was never adopted here in the Netherlands. Was this all (intended or accidental) theatre or did this actually make sense in some climates? I can imagine it looks reassuring.