There can only be 2 reasons for such a thing:
One, your vagina is made out of a dry white wine and is currently fermenting. Or, two, you are still reeling from an epic New Years Eve in which you or your man doused your entire body (vagina, fingers and lips) with the sparkling stuff in an act of ultimate celebration.
From there you probably made sweet love in a broom closet, ringing in the New Year in grand style. All that's great, but you woke up the next day with a killer migraine and one stubborn lingering question My vagina smells like champagne, any idea why?
Likely, your partner also was near black out drunk by the end of the evening, so he's no Sherlock Holmes in piecing together this case of the Winey Vagina.
That's where I come in. The case of the Bubbly Vagina -- Closed.
It may be a start of a yeast infection....the fermentation process in wine and champagne has a yeasyt smell to it.