There is no cadaverine in pus.
True there are several of the volatile compounds found in cadaver odour which are also found in pus but no cadaverine and without it Eddie would not have alerted.
Quite simply ... you are wrong.
Ever almost gagged when someone with severe halitosis has breathed on you? The cause of the smell is very simple ...
All About Bad Breath (Porphyromonas Gingivalis)FACTS: Many people believe that bad breath, or halitosis, is caused by gas rising up from the stomach – particularly after eating onions or spicy foods. In fact, most cases are caused by microbes such as Porphyromonas gingivalis!
Between three and four hundred types of microbes typically call the human mouth home. Most are harmless. But a few produce “volatile sulfur compounds.” These compounds, such as hydrogen sulfide – which smells like rotting eggs – give bad breath its characteristic odor. (Other oral bacterial by-products include cadaverine and putrescine, which are typical of rotting corpses and rotting meat!)
VSC-producing bacteria are generally present in inoffensive quantities. However, as oxygen levels in areas of the mouth are reduced – behind layers of plaque or food, for instance – these anaerobic bacteria thrive. Furthermore, as VSC-levels increase, the pH of the mouth is reduced, which creates the sour, metallic taste experienced by halitosis sufferers!
So what can you do about Porphyromonas gingivalis? Brush and floss, of course. Oh, and avoid onions and spicy foods: they’re very high in sulfur content.
https://www.giantmicrobes.com/uk/products/badbreath.htmlInfection can occur anywhere in the human body and if the result produces pus the stink of putrefaction can in many cases be overpowering.
Nothing more so than if you are unfortunate enough to have tooth abscess which requires draining whether human or animal ... of course Eddie would react to one though not t'other. But the same chemical compounds make up both.
Why do abscesses smell so bad? **** **** **** **** **** ****
This multiplication of organisms and the cellular destruction also forms a cocktail of some unpleasant chemicals. The exact mix depends on the organisms. Gasses such as ammonia, methane and sulphur dioxide (think rotten eggs) may be produced. Two other compounds are largely responsible for the foul odour of putrefying flesh. The delightfully named putrescine and cadaverine, are produced by the breakdown of amino acids in the tissue.
But what is the point of all this stink? To us the smell is disgusting and we are repelled by it. We instinctively avoid anything that creates such odours helping to protect us from exposure to infectious agents.
http://howanimalswork.blogspot.co.uk/2011/04/what-makes-eye-colour.html