There's no need. The vagina is 'self-cleaning' and there's no need to douche if you take regular baths or showers. The most ridiculous thing ever is the 'cherry douche' - it's not meant to smell of cherries, it's meant to smell of you! If your man doesn't like the smell and taste of you then he's no kind of man!
If the scent is particularly strong it's normally an indication that there's some kind of problem, an infection or yeast or something. You're more - not less - more likely to get infections and yeast problems if you douche because you interfere with your body's natural acid balance.