Is it true that fake chivas regal whiskey has more air bubbles which do not disappear fast?

Usually you can tell a counterfeited Chivas Regal by observing its fluidity when lightly shaking the bottle : it will have no sirup-like quality but simply move like water, in which case it has probably been diluted. Furthermore there will be no typical bite to the taste which warms the palate nor fruity side-taste (raisin) so often associated with Chivas - it will simply be smooth and slightly alcoholic like a young whiskey blend. Evidently there have been problems with counterfeited Chivas circulating in even the most unlikely places like Paris' Orly Sud Airport, so be careful.