Q. What can you give a dog to help with a stuffy nose?
A. You could perhaps try steaming, we use Olbas oil in the room where our patients with upper respiratory problems are hospitalised. You don't need any special equipment, just a bucket with hot water , add a couple of drops of Olbas oil. Make sure is the bucket is out of reach for the dog and that you don't burn yourself with the hot water !
We also use a drug for veterinary use called Bisolvon, your vet might be able to help you prescribing it for you.
If the stuffy nose has been going on for some time, it is worthy having your dog checked over, as there are common and nasty nasal tumors in dogs. It could also be a foreign body, such as grass blade.