How do you deal with stinky teenagers?

Encourage them to shower daily or at least every other day. Also, wearing deoderant is good. For a girl, a nice lightly scented lotion might be a good gift, too, as a subtle hint. Make sure they wash their faces every night to remove bacteria. Brushing teeth is key to keeping away bad breath. Washing hands keeps up good hygeine, too. Make sure the clothes are clean and that they change out of sweating clothes after acitivities, like sports.