The sniffer's entity's name  is translated incorrectly in Greek as "Λαγωνικό", which translates to English as "Hound" .

Notice: In Minecraft: Java Edition, the sniffer's entity name is translated correctly.

Etymology of Hound: 

• A dog, particularly a breed with a good sense of smell developed for hunting other animals. (Source: Wikipedia

Source: Wikipedia

Etymology of "Λαγωνικό":

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According to folk etymology, from Ancient Greek λακωνικός (lakōnikós) κύων (kúōn). Most probably from Ancient Greek λαγώς (lagṓs). Compare also Albanian langua (“id.”).Noun

λαγωνικό • (lagonikó) n

1. hound (dog)

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Source: [Wikipedia|https://en.wiktionary.org/wiki/%ce%bb%ce%b1%ce%b3%cf%89%ce%bd%ce%b9%ce%ba%cf%8c])

This translation issue affects the following translation keys:

createWorldScreen.experimentalSnifferFeature   
createWorldScreen.experimentalSnifferFeatureDescription
entity.sniffer.name
item.spawn_egg.entity.sniffer.name 

Solution:

The translations strings, which refrence the sniffer, have to be changed, accordingly.
The correct translation for the sniffer's entity's name in Greek is "Οσφρητής" - The object which utilises his sense of smell.  

• Important Notice:
• Some people might translate the word "Sniffer" as "Μυριστής", which in Unofficial Greek, has the same meaning , but the English equivalent/ tranlation in English is the "Smeller" not the "Sniffer".

A list of the previously refrenced translation keys', tranlsations in Greek, corrected, follows: (Some Syntax Changes Have Been Made, to adapt for the changes.) (In addition, a additional gramatical correction has been made at the translation of the createWorldScreen.experimentalSnifferFeatureDescription ( Changed "το" to "του" , see more at : https://www.greek-language.gr/greekLang/ancient_greek/tools/composition/page_012.html))

createWorldScreen.experimentalSnifferFeature=Οσφρητής    #
createWorldScreen.experimentalSnifferFeatureDescription=Δοκίμασε τις πρώτες εκδόσεις του νικητή της ψηφοφορίας για τα πλάσματα του 2022 - του Οσφρητή
entity.sniffer.name=Οσφρητής    #
item.spawn_egg.entity.sniffer.name=Γένεση Οσφρητή