I can be sitting outside without a fly in sight and the second I open a drink or food there is a swarm. How the heck to they find good sources so quickly?
In: Earth Science
They have a sense of “smell” that compels them towards certain chemicals in the air that come from food and liquids with nutritional value. It’s particularly intelligent, either — they’re compelled towards them. It’s more like water flowing through the path of least resistance. This is the life of a fly, they’re compelled to follow smells for their entire existence, only taking a break for a moment when they sense danger.
They then forget the danger, almost immediately, being perpetually compelled back to the source of the smell.
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