I have two dogs one is a shorthair breed and the other is a longhair kind. They both contantly stink and I wanted to know if you could guess what they are getting into.

Fox poo?

Can you trace where the smell is coming from? I recently went through this with my dog. It ended up being an a*nal gland problem. I could trace the smell to her back end. It was very easy for the vet to express the glands. The smell was almost instantly gone.

There aren't many foxes out right now and we don't have many. I tried to trace the smell and it's hard to find out where it's coming from. Mostly it is their heads. I don't know what to do,perhaps it's their breath but every time I have brushed their teeth it doesn't help. Could a stinky dog be a sign of disease?

Ears can be another source of stink especially if they have floppy ears. An ear infection can really be stinky.

I have a special ear medicine especially made for that. It smells very good. My min. daschund's head really stinks but so does the rest of her. I'm worried that this smell that is coming from both my dogs be a sign for a disease, is that possible?
Your help is needed.

Skin diseases can cause a dog to have increased or abnormal odor. Allergy can cause increased production of apocrine sweat, which imparts a musty odor. This condition, termed hyperhidrosis, can encourage yeast infection or bacterial skin infection and these micro-organisms produce odors as well. Dogs with seborrhea or keratinization defect, and dogs with deep skin folds(such as on the face of an English bulldog), are very subject to secondary proliferation of bacteria or yeast on the skin surface, and these produce odors.

Thank You for your help I think a small yeast infection may be the culprit, thanks again.

Is this related to the other post 2 problems?

Often an odor is related to bacterial and fungal skin infections and ear infections.
Given your other symptoms I would definitely suggest an immediate vet visit and have them check for these.
Not only do you need to clear up any such infections but you need to address the underlying cause whether it be hormonal imbalance, poor diet, parasites (mites ), or allergies.
Only a veterinarian is qualified to diagnose all this and come up with a proper treatment plan.