C463 Differentiating Poison

The grey color was extremely fine. If one did not look carefully, it was impossible to tell that Mo Huan could not figure out what it was. Lowering his head, the tip of his nose was almost touching the cake. He took a deep sniff. Aside from the sweet fragrance, there was also an extremely faint pungent smell.

How could there be such a smell? This smell... It sounded familiar