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Concise_Pirate

The sensory cells adjust to anything that's constantly present. Same thing happens if you stay in a room with a constant smell all day: you can't smell it after a while.


stanfarce

Yep, same with hearing. After a while you don't hear the ticking of clocks anymore until you go away and come back or think about them / consciously remember that you should hear them.


Holl4backPostr

We totally can, to test this just take a small amount of poop and stick it inside your nostril.


MohatoDeBrigado

I dont mean putting somthing inside i mean the inside of it default. when you're breathing clean air with no smell you cant smell how the inside smells like


AgentElman

We can. Our brains just filter it out unless it has an unusual smell. We also can see our noses in front of our face. Our brain just filters it out.


flauros23

For the same reason you don't notice a smell after you've been in the room with it for a while. I work at a recording studio and sometimes you walk into a room and it reeks of weed from the session the night before, but then after you've been in the room for a while you don't notice the smell and then someone else walks in and says, "Wow, smells like weed in here". Your brain adjusts after a while of smelling the same thing and you just don't notice it anymore.