Eh well if you shower every day you should be clean, but sometimes if we were all clean all the time we would never truly know the scent of our partner, sometimes that salty smell on your partners skin can be nice, and smelling your partner is good bonding, very animal like. Besides if you love your partner you would have sex with them whether they smell like flowers or they kiss you after eating garlic bread. You ignore that stuff after awhile and asking your partner to brush their teeth after food is just rude.