I read the French version last year, and posted a few thoughts on it here (somewhere).
Honestly, I wasn't terribly impressed. For me, there were a few genuinely interesting bits, mainly about aromachemicals and the composition of some of his fragrances. In the main however, it seemed more like an indulgent exercise in pretentiousness and pseudo-intellectual rambling.
A quick google search throws up this recent review in the Daily Mail, with the quote. :
"Possibly it’s the fault of the translator, but he’s apt to come across like a wildly pretentious version of Eeyore. ‘I smell my own bestiality,’ he writes at one point, ‘my non-eternity, the smell of life.’
Can't believe I agree with something written in the Mail!