Onions repel aphids, cabbage looper, carrot flies, Colorado potato beetle, and rabbits.

What do onions keep away?

Onions are an excellent companion plant to carrots, lettuce, strawberries, and beets. When grouped together bugs, such as maggots, are repelled by the overwhelming smell. Aphids and mites are also among the group of bugs that don’t like the smell of onions.

Do Mosquitoes hate onions?

According to the University of Florida, there is no proof that eating onions, or any other foods, such as garlic or bananas, will repel mosquitoes from you. … While onion and other allium species do have insect repellent properties, onion plants or sprays made from sliced onion will not effectively repel mosquitoes.