Why put an onion under the bed?

Applying onion to the chest to relieve congestion.

For a direct anti-inflammatory effect, you can apply onion slices to the chest. Place them in a thin cloth, then fix them on your chest for about 30 minutes. The active compounds in the onion pass through the skin, helping to reduce congestion and soothe chest discomfort, like a natural poultice.

An onion herbal tea to strengthen the immune system
If you can stand the taste, onion herbal tea is an excellent remedy for colds. Boiling a few onion slices for 10 to 15 minutes will give you a soothing drink for the respiratory tract. Add honey and lemon to improve the taste and enhance the antibacterial and antiviral effect of this infusion.

Quick recipe:
Boil a few onion slices in water for 10-15 minutes.
Add a spoonful of honey and a little lemon juice to soften.
Drink this hot herbal tea to soothe your throat and strengthen your immune system.
Conclusion
The onion, with its multiple benefits, is a valuable ally against cold symptoms. From inhalation to infusions, its decongestant and anti-inflammatory properties make it an effective and accessible natural remedy to breathe better.