Can anybody explain the last part of the film 'Perfume' to me please?

Where Jean is about to be hanged but then he takes out the perfume he has made from killing all those girls, and suddenly everybody seems to fall in love with him and claim the scent is a miracle? Weren't these just 25 ordinary girls afterall? What makes the scent so special, and how does it hypnotize all these people into thinking Jean is an angel instead of a murderer? Also, what happens to Jean at the end of the film, where it looks like the people actually EAT him? Thanks for the help, sorry its such a long question :)