Eli5 how our body can feel the smallest bug/insect on our skin but not be bothered by wind or dust constantly against us?

Question

Or even our clothing rubbing against us doesn’t bother us but if a tiny bug lands anywhere on our body we feel it straight away

In: 4

Answer 1

Evolution: detecting bugs is important, lest they bite us, while being annoyed by the wind or clothing is counterproductive.

People suffering from autism can be very annoyed by clothing, because their sensory filters are out of whack.