If this idea has been brought up before I apologize,  I have not read every post on here.  Could Illyrio be the perfumed seneschal Dany needs to be aware of?  The line from Quiathe in DwD Dany II:    I was reading Lost Melnibonean's post on the Blackfyre (which is awesome!) and he had some quotes from Dany I in Got which got me thinking.  Illyrio is trying to cover up a stink. He uses perfumes. This could be interpreted that Illyrio is trying to hide something.