• 🐑🇸 🇭 🇪 🇪 🇵 🇱 🇪🐑@lemmy.world
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    1 year ago

    Fun fact the brain actually filters the smell out. When the smell of your noses internals changes, or your brain stops filtering it for whatever reason (common during illness), it tends to smell putrid. Often described as a smell of “decay”.

    That’s not even because the smell is that bad. It’s just a mildly bad smell that happens to be right in your smell receptors.

    Covid caused a funny phenomena with that too as it causes a heavy change in taste/smell perception.

    • Otter@lemmy.ca
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      1 year ago

      Interesting, could you share more on how that works? Is it a neurological change or more of a physical “clogging”

      • DrRatso@lemmy.ml
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        1 year ago

        There are a variety of ways in which our bodies attune to constant stimulus, in the case of neural stimulus, there are a variety of mechcanisms with the common goal of reducing activation of the neural pathway. You could have less receptors, more breakdown of the stimulating compound, increased cell activation treshold or downstream changes that similarly just reduce the ability for the signal to cause effects further along the chain.

        Receptor or physical clogging generally (afaik) does not happen with substances we encounter normally, however it is a common tactic in pharmacology, where we might use a drug that binds to a receptor without effect and prevents the active compound from binding.

        Or in the case of Succinylcholine, it binds, causes the normal action, but then prevents the normal molecule from binding and causing the action again - this is used to achieve rapid muscle paralysis and is both a poison as well as a common drug used for anesthesia.

    • LucidLethargy@lemmy.world
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      1 year ago

      Share your source, otherwise this is just bullshit. I think it’s bullshit.

      Edit: I don’t doubt the covid part. Maybe that causes weird reactions. It’s been described to me as “different”, rather than a loss of smell.

      Edit 2: Still no source. Downvote all you want, you’re still not convincing any scientifically minded individual that you’re correct.

      • dustyData@lemmy.world
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        1 year ago

        You can smell other people’s mucous (not recommended). If you ever have been the primary care taker for a baby or small child you’d know what boogers smell like. Old boogers also start to decompose and the smell is faintly different. Sick mucous also smells different and worse. I could tell my nephews were sick with the flu by smelling them from ways away before noticing any other symptom. Sometimes I can smell that in public transport and it makes me figuratively run in the opposite direction of the sick person.

  • Damaskox@kbin.social
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    1 year ago

    I appreciate discussions that differ from the basic, casual topics! It’s a nice, different breeze!