Does anyone know what I can do about my dog's...farting...problem?

I have a serious problem. I've googled and googled for answers, but I can't find anything. I HAVEN'T changed my dog's diet. She eats Royan Canin, breed specific dog food. I had my vet refer me to a nutritionist for dogs and this is one of the foods she suggested. My dog has been eating this food for months now, with no problems. My dog RECENTLY has had problems with extremely smelly gas! She passes gas so often and it reeks so badly, I just don't know what to do! She only has the occasional snack, and like I said, I haven't changed her diet. I read something about her anal glands needing to be "drained" by a vet, but that explanation came along with other symptoms, such as anal leakage, and "scooting" the butt across the floor, and my dog hasn't been doing any of that. Let me make it simple, she has NO symptoms other than having extremely smelly farts! She doesn't "lick" down there, nor has she done anything else out of the ordinary to indicate a problem. Does anyone know a remedy for this? Or anything I can do? She is literally clearing out the room with her stench and she's only a one year old Pomeranian!!!