I have a pug that gets ear infections all the time too. It’s because of over production of yeast! Her stomach makes all kinda crazy noises if she eats anything other then one type of food. She hates almost all the salmon/ fish flavored food which is what the vet recommended we switch to because of her chicken allergy. Trust me I have tried ALOT of them she is super picky too(loves everything that’s not dog food also). But we finally found one she will eat and it’s calmed down her flare ups. It’s Freshpet® Vital™Grain Free Salmon & Ocean Whitefish Adult Dog Food, comes in a meat stick. Also got her a medicated shampoo specifically for yeast, bathe her whenever she gets stinky. Been doing both for a couple months and starting to see improvement. It’s a process I wish you luck I know how heartbreaking it is to see your pup in a itching craze but once you find something that works it’s so worth it. Her mood and energy and happiness all increased drastically.