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4
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0answers
63 views

When and why did humans start disliking the way we naturally smell? [closed]

Like many animals, humans produce a myriad of scents from sweating, bacteria, possibly pheromones, etc. Many of these scents are used throughout the animal kingdom for mate choice, recognition of ...
1
vote
1answer
51 views

Are there electron or proton receptors in our nose?

We can easily smell chlorine gas and its irritating odour, but we cannot smell oxygen gas. Do few protons and electrons make such difference to our olfactory receptors?
1
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1answer
71 views

When you blow through your nose while holding it closed to “depop” you ears, why do you sometimes feel it in your eyes?

After your ears have "popped", for example on a flight, I heard you are supposed to hold your nostrils closed and blow through your nose to readjust the pressure to the normal level. Why do you ...
0
votes
1answer
40 views

What are the reasons that soap has so different smell and flavour?

Everybody has tried to taste soap in their childhood. One would think that if soap has a tasty smell it would have tasty flavor too. But we know it is not true (in the common cases). But why is there ...
1
vote
1answer
128 views

Evolutionary advantages of wet nose of cats and dogs?

Everyone knows that some animals, at least cats and dogs, keep their noses wet and cool. But why did they evolve it? What evolutionary advantages does it provide? Smell-sensing cells need cooling for ...
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0answers
21 views

Why can I breathe true only One nostril [duplicate]

just so you know, this is not why I breathe OUT only from one nostril. I am literally breathing with only 1 nostril, I can't breathe in any oxygen true my left one. If I like plug the right nostril, I ...
5
votes
1answer
60 views

Does our nose detect only if there is change in odor?

If I enter a room with certain odor, I can sense the odor. However, if I stay there for some time I cannot sense it anymore. A new entrant to the room can still smell it or I have to leave the room ...
4
votes
1answer
603 views

Why do I breathe out of BOTH nostrils?

After reading the question why do I only breathe out of one nostril I realized that breathing out of both isn't common. I have always breathed out of both, and when I get a stuffy nose, or a runny ...
175
votes
3answers
85k views

Why do I only breathe out of one nostril?

I was just sitting with my hand next to my nose and I realized that air was only coming out of the right nostril. Why is that? I would think I would use both, it seems much more efficient. Have I ...
5
votes
4answers
13k views

Can nosebleeds cause death?

Can epistaxis or nosebleeds be a of cause death?
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0answers
58 views

Will breathing through mouth result in any disorders? [closed]

My nose is slightly bent. When I was born, I had an issue with breathing. My mom said that doctors had inserted a breathing tube in one of my nostrils. This tube may have caused the deformation. From ...
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0answers
18 views

How is the nasal secretion system of local immunity coupled with lymphatic circulation?

I started a thread about Nasal chronic Inflammation after influenza virus here. However, I do not understand enough well the structure of the nose to answer the questions there. I know that the lysed ...
0
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0answers
25 views

To prevent dry cough through reflex arch in chronic rhinitis?

Assume that the patient have atrophic nasal membranes after long chronic rhinitis. He is having frequent dry coughs through reflex arch induced by exercise, allergies, and ... You normally heal ...