Smell Detection

The smell of separation is an educational method in which the dog is taught to identify the odour from all other odours. Dog skill is to distinguish between a particular odour given samples.

Odour samples are placed in jars. Dog inhalants work to the appropriate training platform (jar course, the smell of the track, the track separation).

The method is well suited for the so-called laboratory dogs who do not need to look for the source of the smell. If the dog is to be taught to be looking for the smell, coming from exploration exercises until much later in the dog’s working deftly already jar course.

The odour separation is also utilised in the person search exercises, when the dog is given a so-called output smell from the person to be searched.

Cancer dogs – The dog’s sense of smell

The sense of smell is the strongest and most important sense on the dog. With odours dog communicates and receives information about it’s environment. A medium size dog has approx. 220 million smell cells, cats 200 million, humans just 5 million. The dog will be able to separate up to 2,000 different odour.

A healthy dog’s nose is moist. Moisture is important, it acts as a “Velcro”, which draws on itself, very few odour molecules. Through the nostrils, they are transported in specialised epithelial tissues of the nasal cavity odour processing and then on to the brain. The dog’s sense of smell brain area is much larger, more complex and sophisticated than the human equivalent area.

The dog and the human perception of smell worlds are very far apart. Unlike a human, a dog is able to

  • Detect the extremely attenuated olfactory stimuli.
  • Detect an unlimited number of odors and distinguish them from each other.
  • Press the memory odors and to identify them even after years.

Mould dogs

Mould search dogs have been taught to by the smell separation process many different fungal genera perfume samples.

Different moulds grow in different substrates and smell different. However, in practical work mould dog runs into damaged areas, in which often different mould genera species grows on top of each other.

The mould dog must be able to distinguish between a clean undamaged building material from a mouldy material. It must also be sufficiently focused on to find the points in the building where the smell comes from.

Mould search dog work hamper in some buildings ,a mechanical ventilation and an odour control diversion in the structure reason or another, into a different place of the actual location of the lesion.

Mould search dog working to facilitate the settlement of the status of the building; after the discovery of the smell points material samples for laboratory examination can be taken or to be agreed with the builders to do further studies.

Identifying diseases

In Finland, in 2012 the number of new cancer cases was more than 30 000 (Finnish Cancer Registry). A large number of people with cancer detection of study gives reason to expand to new areas in Finland. Research points to the survival of cancer patients to rise when the disease is diagnosed as early as possible (McCulloch et al. 2012). Visions patients with cancer, the survival rate increase is speeding up the research. In a society with smell detection dogs the study should be a quick and inexpensive way to find cancer earlier than is possible with the existing screening methods.

Read the study plan for the identification of diseases with the help of dogs

Bed bug dogs

In recent years, bed bugs (Cimex lectularius), have increased significantly. Bed bug is a small, approx. 1-5 mm long insect, which feeds on the blood. Their detection is at the beginning of the problem difficult because bed bugs are happy to hide behind the beds frames or floor profiles, in which case they are not able to see through the eyes. Then work of bed bug dog is the invaluable assistance.

Finland’s first the bed bug dog began their work in the summer of 2013. The bed bug dog is trained to recognize the smell of the living bed bug and to distinguish it for example dead bedbugs and other bed bug species.

Rat dogs

Smell detection dogs can be used in rodent control to fight against rats. Dogs are trained to identify the smell of rats. The dogs are trained to separate the smell, to identify the different ages and different sexes of rats by smell.

Dogs can be utilized in various applications to step up the fight against the rat. For example, in large buildings dog can quickly locate the path and nests of rats. In exterior spaces dog can identify whether cavities in the yard are rat holes or not. The dog is also able to distinguish between the active use of the rat holes, whereby the pesticide can be applied to active slots. In addition, a dog may be utilized to indicate whether or not there are rats. This is useful, for example the so-called zero-tolerance policy areas in which the presence of rats can ruin the material.