Does planting chives in the garden help get rid of aphids?

Yes, planting chives in the garden helps get rid of aphids.

Specifically, aphids disdain strongly aromatic plants. Alliums such as chives, garlic, leeks, onions and shallots fit the bill. They will be repugnant to such unlikeable pests as aphids, carrot flies, fruit tree borers, and weevils. They will limit the growth of the gardener's beans and peas - which therefore should not be planted companionably nearby - but protect roses from ants.