I've seen a lot of debate about the ending of 'Perfume' online. Some people hate it, find it too absurd or grotesque. I completely disagree. For me, it's the only possible ending, and it's utterly clear in its logic. Grenouille's whole drive is to possess, to consume, the ultimate scent, the essence of the beautiful girl. Once he has it, and he uses it to achieve total, horrifying adoration in that town square, what else is there? He's reached the peak of his twisted art. Him being eaten by the crowd is a perfect inversion: he spent his life wanting to consume beauty, and in the end, the ugliness of humanity consumes him. It's not a mystery, it's a brutal and brilliant punchline.
I think if you're looking for a tidy moral resolution or a 'satisfying' comeuppance in a traditional sense, you'll be disappointed. But if you've followed the book's dark, satirical tone, the ending feels inevitable and strangely fitting. The clarity is in the imagery: the man who wanted to be loved for a smell is literally loved to death for it. That last scene has stuck with me for years.