What do dirty floors and corrupted politicians have in common? They are both revolting. Disgust evolved to protect us from contamination and harm, being it physical or moral. But are these feelings an immovable reality or can we change them? Is our moral compass regulated by the same mechanisms that prevent us from drinking expired milk? And why is it important to know? This is a journey led by Dr Anna Sedda (Heriot-Watt University) into understanding and accepting disgust.