If your dog’s nose is not breathable, you can use salt water, boric acid solution, sodium bicarbonate solution, potassium permanganate solution, etc. to flush the dog’s nasal cavity. Note that the dog’s head must be lowered to flush, and intranasal drops should be dripped after flushing. Add anti-inflammatory agents. In order to promote vasoconstriction and reduce sensitivity, epinephrine, benzoyl salicylate paraffin oil, and nasal drops can be dripped into the dog's nostrils. For symptomatic treatment, use drugs that reduce inflammation, resolve phlegm, relieve cough, clear away heat, and enhance immunity.

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A dog’s nose that is not breathable is generally caused by respiratory infections caused by colds, bacterial infections, viral infections, etc.