An Orc warcamp!

You begin searching for the source of the smell, and after half an hour of looking around the area you find it. A sprawling jungle of tents of varying sizes located within the boundaries of hastily put up wooden walls.

Walking around the camp and working were a multitude of beautiful, sweaty green skinned girls. They seemed very strong, and lots of them were working out or training. Most wore little, though some of them had armor or furs to cover themselves with. They must have been the source of the smell that's plagued you.

You can't help but think of what the Orcs might do if they catch you... Appearently, Orcs were one of the first Monster Girl species to experiment with turning human women into Monster Girls. Orcs were also known for attracting various other types of Monster Girls to their warcamps, such as Goblins, Ogres, and High Orcs.

Suddenly, you hear a rustling from a nearby patch of grass...