In this world, every living creature has "Life Energy." They're born with a certain amount, and gain more when they kill something. The bigger the kill, the more Life Energy they have. When any living things is at max Life Energy, they expel it through breathing. However, Skunk Girls alone expel their extra Life Energy through farting.
You are a tiny, a 3cm pest with low Life Energy capacity. You and another tiny were captured by Amy, a Skunk Girl.
Amy: Hehe!~ Such pathetic little things worth less than nothing! Why don't I just?~
Amy picks up the other tiny, and places it in her mouth. She chews them a bit before swallowing them. Amy turns around and bends over a bit, a gassy fart of Life Energy being blown in your face.
Amy: How does it feel, knowing your little friend's life ended as a fart of mine? Hehehe!~