Do Solids Like Wood Produce Smells?

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Discussion Overview

The discussion revolves around the nature of smells produced by solid materials, specifically wood. Participants explore the relationship between solid matter and the sensory perception of smell, considering the mechanisms by which scents are detected and the types of compounds involved.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that smell is a sensory perception rather than a property of solids, questioning whether the scent of wood is carried by gases or aerosols.
  • Others discuss the interpretation of smells as interactions between molecules and olfactory nerves, noting that some sensations perceived as smells may not be traditional odors.
  • One participant highlights that certain gases, like hydrogen sulfide, can overwhelm the sense of smell, leading to dangerous situations.
  • Another participant explains that wood contains organic compounds that evaporate and contribute to its characteristic smell when cut, suggesting that these compounds serve protective functions for the tree.
  • There is mention of the perception of smell being tied to gaseous molecules, with some participants speculating on the nature of smells from solids and questioning the case for metals.

Areas of Agreement / Disagreement

Participants generally agree that smell is a sensory perception, but there is no consensus on whether the scents from solids like wood are due to gases, aerosols, or other mechanisms. Multiple competing views remain regarding the nature of smells and their sources.

Contextual Notes

Some discussions involve assumptions about the physical state of compounds and their volatility, as well as the definitions of smell and sensory perception, which may not be fully resolved.

Jupiter60
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If so, what about smells coming from solid matter, like wood?
 
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No, smell is a sense. That is like asking if taste is a food.

Some gasses can be detected by our sense of smell as can some aerosols. I don't know if the scent of wood is carried by a gas or an aerosol.
 
As DaleSpam said, smell is a sensory perception. It is an interpretation by our brain of the interaction of molecules (from gasses, aerosols, whatever) that hit the olefactory nerves.

There are some sensations that people THINK of as smells that actually are not. The best example I can think of is the reaction your nose has to ammonia. There is a bit of smell involved, but it is swamped by the predominant perception which is that of your mucus membranes being irritated by the chemical reaction they have with ammonia.
 
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That is interesting. I did not know that.
 
Sometimes, certain smells can overwhelm your senses.

In low concentrations, hydrogen sulfide smells like rotten eggs. If the concentration of this gas goes above a certain limit, you lose the ability to perceive the rotten egg smell any longer, which can be dangerous. You might be surrounded by an atmosphere which has little or no oxygen available, and asphyxiation might result.
 
Wood contains many organic compounds such as turpentine, oil and resin. Each wood has a characteristic smell when cut. Smell is your sense detecting a few of the gas molecules of organic compounds that evaporate when exposed. These compounds often protect the tree from decay or digestion by insects.
http://en.wikipedia.org/wiki/Odor
http://en.wikipedia.org/wiki/Olfaction

Smell if you can, a piece of old wood, then scratch it and smell it again. You will smell the exposed organic molecules as they evaporate from the damaged cell structure.

http://en.wikipedia.org/wiki/Turpentine
http://en.wikipedia.org/wiki/Essential_oil
http://en.wikipedia.org/wiki/List_of_essential_oils
 
DaleSpam said:
No, smell is a sense. That is like asking if taste is a food.

Some gasses can be detected by our sense of smell as can some aerosols. I don't know if the scent of wood is carried by a gas or an aerosol.

Smell is something we detect with our sense of smell, much like sound is what we detect with our sense of hearing and light is what we detect with our sense of vision.

From Wikipedia:

An odor or odour or fragrance (commonly referred to as a smell) is caused by one or more volatilized chemical compounds, generally at a very low concentration, that humans or other animals perceive by the sense of olfaction.

So I guess this sums up what a smell is.
 
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I don't think smell is something tangible but rather what we perceive in our brains. Indeed, such senses are aroused by stimuli and in the case of olfactory sense, it should be some thing in the air,

I believe that most smells are from gaseous molecules like benzene related or lipid based fragrances, bad smells of Sulphur dioxide or ammonia gas, which arise from volatile liquids or fumes. In many cases, the smell of the solid objects are from fumes released from the solid, for example the fungus on woods or volatile compound.

I am not sure about metals though if there isn't such thing described above.
 

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