Smell plays a large evolutionary part in picking potential mates. Our noses know how to diversify our gene pools, when fertility is at its height — and also detect who will agree with our political stance. Sense of smell even correlates with social circle size. Researchers set out to find whether foods rich in carotenoids, a pigment shown to increase skin tone attractiveness, would also give body odor a boost. They studied male sweat samples with females sniff-testing for hedonic, intensity and qualitative attributes. The results, as published in Evolution and Human Behavior say: "men who ate a variation of vegetables and fruits, as well as reasonable amounts of fat, meats, eggs and tofu, smelled better than those who ate a lot of carbs. The low-carb diets produced a floral, fruity, sweet and medicinal" sweat, while higher carbohydrate intake resulted in stronger, less pleasant body odor". http://www.popsci.com/science-shows-that-men-who-eat-salads-smell-attractive Study: http://www.sciencedirect.com/science/article/pii/S1090513816301933 I wonder if study included salads that contain garlic or onion.