More information can be found here . Folliculitis Bumps that appear to be pimples appear not only on the face, but also on the sides, back and legs. Without treatment they can become deep seated and drain openly. It also can cause hair loss. These bumps should not be squeezed or drained except if your vet tells you specifically to do so, as the infection could spread into the muscle and skin.
Skin fold pyoderma Wrinkles and folds are ideal spots for bacteria to grow.
If the wrinkles become infected they can be stained, irritated and definitely can smell pretty badly. Your vet needs to determine if your Pug has excessive draining from an eye problem, or some other underlying cause for moisture to be retained in the wrinkles causing this problem. Hot Spots Hot spots are painful, oval patches of raw open sores on a Pug's skin, which smell badly and may become infected easily. Hair normally falls out before healing starts. This is a bacterial infection and I have found personally in my own dogs to have more problems with them if I don't properly dry the coat after a bath.