First we want to know reliable condition of this nose is clean or faulty .
The amount depends on the vintage (which determines the magnitude of the berries) as well as towards the varietal writing. The other common fault is the cork taint or 'corked' wine. https://www.webwiki.ch/www.openlearning.com/u/bushjonassen-ssx387/blog/H1RuChivas12HngThmVThanhLchVngCpH1