this post was submitted on 31 Dec 2025
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They probably realize they are moving because they can track the direction and strength of the smells of the previous room.
If you think about it, you can use smells to locate in 3d the same way you can use vision or sound.
If you think about it, smells don't act like waves, unlike sound and light.
You can locate things with smell, but not in the same way as sound and light. Yes, some species do have prominent stereo smell, so they can know a direction from which a smell is emanating, but the emanation doesn't propagate like waves.
/superpedant
Being aware of how pedantic you're being, doesn't make it any better btw. Specially when you don't know what you're taking about.
Air is a gas and things flow form higher to lower concentration, so smells propagate form the source outwards. Like drop of ink in clear water.
You have stereoscopic smell. Go outside and follow the smell of grass.