Private answer
From what you describe it is likely your Westie has an allergic skin condition that leads to secondary infections. It is the infection of the ears that cause the odor. The reality of this type of condition is we must concentrate on control rather than cure. At the Sanctuary we use Heska testing to define the allergy and provide appropriate treatment. Often anti-inflammatory medications are also needed to control the itching. Initially antibiotics are required to get infections under control. Long term regular ear cleansing is generally required. Even with the best of plans there is often a flare up which will require additional antibiotics. This is not a one and done treatment!
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