CORNBRINGER
So the sewer smell masks him from monsters, even though that is not how it works. It was not the physical smell that caused Percy to be protected but the personality or karma of that guy. He can hid from the godess of the hunt, without knowing, but he cant seem to hide from monsters.....yea right. All that, and his magic is not enough to hid his smell? If you going with it being actual physical smell, enchanting himself to smell like some forest huger should protect him, yet it does not..... a lot of bs in one chapter.