It's necessary a good time after the shower, otherwise the taste and smeel come from soup and not really from the girl. The ideal is to spend around 4 hours after shower.Licking vagina is an interesting experience. But talking about cleanliness, i wouldn't lick vagina which is smell bad, because it makes me wanna puke and then ruin my sex mood. Taking shower first would be a great deal and anal cleansing is more preferable, 'cause some of the smelly problem come from the anus i believe.
I always enjoy vagina licking, cleanly shaved would be best!