The next day at dinner I walk up to the Professor’s table, where Dumbledore is sitting in the middle, as I walk by I inhale deeply and notice the scent Blaise told me about. It is almost sour and putrid. After a small talk with my Father I walk away and nod to Blaise. I repeat it multiple times over the coming weeks, the scent is getting stronger, but it is clear that some kind of masking spell is used for the spell, the differences are subtle. We both observe him, watching every move he makes and how he eats, a few things stand out and each night we compare our observations.