Acharya Prashant explains that the human mind is like a storehouse that accumulates vast amounts of information, much of which is forgotten and stored in the subconscious. This forgotten material, which can even be inherited through genes and DNA from thousands of years ago, begins to 'rot' and create a 'stink' in one's life, manifesting as unexplained fears or behaviors. He uses the analogy of a house filled with rotting vegetables to describe how the subconscious affects an individual without their direct knowledge of the source.