Why You Should Put Cloves Into an Onion: A Simple Grandma Trick That Still Works Today

When I was younger, I often saw my grandmother push whole cloves into an onion and leave it sitting quietly in the kitchen. At the time, I thought it was just one of those old habits people never explain. Years later, when I finally asked why she did it, I was honestly amazed.

Now I do it too—and I understand why this simple trick has survived for generations.

1. A Natural Air Freshener for the Home

Cloves have a strong, warm aroma, and onions naturally absorb odors from the air. When you combine the two, something interesting happens:

The onion acts like a sponge, pulling in bad smells
The cloves release a pleasant, spicy scent

This makes the room smell fresher without using chemicals, sprays, or artificial perfumes. Many grandmothers used this trick in kitchens where strong cooking smells were common.

2. A Traditional Way to Keep Insects Away

Cloves have long been known for their ability to repel insects. When stuck into an onion, the smell becomes even stronger and more effective. People used this method to help keep flies and other small insects away from food areas—especially before modern insect sprays existed.

3. A Natural Support During Cold Season

In traditional households, cloves and onions were both associated with comfort during colder months. While this isn’t a medical treatment, many people believe the strong scent helps clear the air and create a cleaner environment, especially when someone in the house has a cold.

4. A Zero-Waste, Chemical-Free Solution

One of the best things about this trick is how simple it is:

No electricity
No sprays
No extra cost

Just an onion and a few cloves—things most homes already have. When the onion dries out, you simply throw it away and make a new one.