Why when working on something like satellites, space rovers etc does everyone have to wear gear as if working with diseased patients?

Question

Why when working on something like satellites, space rovers etc does everyone have to wear gear as if working with diseased patients?

In: Engineering

Answer 1

When it costs you a billion dollars to boost something out of Earth’s gravity, you don’t want somebody’s errant fingernail clipping fouling up the works is why. That sucker has to work.