This is my third try to visualise the idea of placing a living plant and decaying material in a glass box.
You see a glass box filled with unusual materials creating a fascinating picture. Once you notice that what is in from of you is actually an explicit confrontation of green grass and a death matter like earth and meat, you notice how disgusting the content are. The more you will to gross you out, the more you should look closer and therefor, the better you overcome your fear.