It has been established that Bella gets physically ill at the sight and smell of blood.
Edward's diet consists of blood, so one would think his breath and his overall all odor would have that coppery smell of blood and not the sweet smell she describes. You are what you eat, afterall.
Does Edward have super-pheramones or something to cover the smell of blood?
Or did SM just not think about it and I'm thinking too much?