First we should know reliable condition on the nose is clean or faulty in the least. The amount depends on the vintage (which determines the magnitude of the berries) as well as more than a varietal arrangement. The other common fault is the cork taint or 'corked' wine. https://www.openlearning.com/u/michaelnicholson-sdl9w0/blog/RuHennessyChuynNghipCungCpCcDngSnPhmRuNgoiUyTn