I am not sure about garlic but I do know of something that smells better & offers greater benefits: Avon's skin so soft. Helps with dandruff, doggy smell, fleas & ticks & mosquitoes hate it too. Good luck!
Does Garlic Help Keep Fleas Away From Your Dog?
Dog breeds that originated in Italy (Neapolitan Mastiff, Bolognese, Bergamasco, Cane Corso, Bracco Italiano, Cirneco dell' Etna, Piccolo Levriero Italiano respond very well to a garlic regiment.