If I remember correctly, you're using the duramycin, continue for the 14 days. something you could try...take a facecloth or whatever and dip into warm water [1 quart] to which you have added 1/4 tsp. of iodized salt and a pinch of baking soda. [the baking soda acts as a buffering agent and will make this solution less painful if it did get into the eyes] Being careful of the eyes, gently wash the beak and head area. You can do this as often as you need. See if that will help with the smell. You could also get a bottle of human salt water nasal spray and do it with that.
I am very glad to hear they are getting better and it's great you are keeping the thread up to date!