Can You Describe the Smell of Ammonia to Me?

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    Ammonia Smell
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Discussion Overview

The discussion revolves around the smell of ammonia, particularly in relation to identifying potential rodent urine in a home. Participants explore various descriptions of ammonia's odor, its comparison to animal urine, and methods for detecting mouse or rat presence.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant describes ammonia's smell as an irritant that overwhelms normal olfactory sensations, likening it to an acid attack on the mucus membranes in the nose.
  • Another suggests that human urine can smell like ammonia but does not always do so, and expresses uncertainty about the smell of rat or mouse urine.
  • Some participants propose that most animal urine, including cat urine, will smell like ammonia after some time due to the breakdown of uric acid.
  • One participant mentions the use of UV flashlights by health inspectors to detect mouse urine, noting that it fluoresces and leaves a trail.
  • Another participant shares a personal anecdote about the smell of fermented shark, comparing it to ammonia.
  • There are suggestions to safely smell ammonia by using wafting techniques or by purchasing ammonia products from stores.
  • Some participants express concerns about the safety of smelling ammonia directly, emphasizing its caustic nature and potential health risks.
  • One participant mentions the concentration of ammonia in different contexts, such as in urine versus cleaning products.

Areas of Agreement / Disagreement

Participants express a range of views on the smell of ammonia and its relation to urine, with no consensus on a definitive description or understanding of the differences between various animal urines. The discussion remains unresolved regarding the exact nature of the smell and its implications for identifying rodent presence.

Contextual Notes

Some participants note that fresh urine may not contain much ammonia initially, and that the perception of ammonia's smell can vary based on concentration and context. There are also references to personal experiences with urine samples and the potential presence of bacteria.

  • #31
JT Smith said:
Just go to the store and buy some glass cleaner and take a whiff. Then go clean your windows and mirrors.
That depends on the formulation. Some glass cleaners have ammonia. Some glass cleaners have isopropanol. some glass cleaners have both ammonia and isopropanol. A few glass cleaners have neither but instead something else. Often enough the product label has an ingredients list. If what is shown is what you are looking for, decide if this sampling would be the choice.
 
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  • #32
kyphysics said:
I am not sure what it smells like and am wondering if someone can describe it to me.

The reason I ask is I am wondering if I have a mouse or rat in the home that is urinating on my clothes. I have read that the mouse/rat urine would smell like ammonia. Thanks!
Ammonia smells like urine. I've known this for decades. You don't need a black light, and in any case how would you tell the difference between different biological traces left around the house? Mostly food traces, I imagine.
 
  • #33
thetrellan said:
Ammonia smells like urine. I've known this for decades. You don't need a black light, and in any case how would you tell the difference between different biological traces left around the house? Mostly food traces, I imagine.
Fresh urine doesn't usually particularly smell of ammonia. A decent UV flashlight can save you weeks of putting your nose right up to the wall to find out exactly where the cat peed a couple of weeks ago.
 
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  • #34
The 146 "perceptual descriptors" in Andrew Dravnieks' 1985 "Atlas of Odor Character Profiles" are listed in the paper The structure of human olfactory space by Alexei A. Koulakov, Armen G. Enikolopov, and Dmitry Rinberg. Ammonia is descriptor #108 (an interesting number: ##108=1^1 \times 2^2 \times 3^3##).

As @hmmm27 pointed out, it smells like glass cleaner ##-## that's because glass cleaner is (usually) diluted ammonia ##-## it evaporates completely without residue.

Undiluted ammonia is very noxious, and strongly insults the respiratory tract if inhaled ##-## if you want to smell it, open a bottle, and wave your hand laterally above the top to waft a little of it.
 

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