If you’ve lost your sense of smell, your first thought might be nerve damage or a viral infection — but don’t overlook the basics. A blocked nose and smell loss often go hand in hand. Obstructed airflow can prevent scent molecules from reaching the olfactory receptors at the top of your nasal cavity.
In this article, we explore why nasal airflow matters, how to check for issues, and what you can do if your nose is constantly congested.
Why Airflow Matters for Smell
Smell depends on airflow. When you breathe in through your nose, tiny scent molecules travel to a small patch of sensory tissue high inside your nasal cavity. If the air can’t reach that area — due to congestion, swelling, or nasal polyps — your ability to smell will be reduced or lost altogether.
Generally, those recovered from Covid or other viruses might feel that their airflow is fine. In this case, a poor sense of smell will happen because of damage to the nerves. But sometimes people who have had viruses seem to have lingering congestion. It has even happened that people recovering from Covid loss of smell go on to develop polyps.
How to Test Your Airflow at Home
You can get a quick idea of whether your airflow is restricted with a simple mirror test:
- Hold a mirror or your phone screen close under your nose.
- Breathe out gently through your nostrils.
- Look at the condensation. Be quick! It doesn’t last long.
Both sides should fog up in roughly the same pattern. If one side shows little or no mist, there may be a blockage on that side of your nose.
Common Causes for Reduced Airflow
- Swollen nasal tissue due to allergies or a viral infection
- Deviated septum
- Nasal polyps (non-cancerous growths)
- Chronic rhinosinusitis without polyps
If your nose feels stuffy all the time or airflow is limited, it’s worth getting a professional opinion.
What to Do Next
- Speak to your GP. They may suggest treatment with sprays or drops
- Try nasal rinsing once or twice a day to reduce mucus
- Use a saline spray to keep the nasal passages moist
- Ask for a referral to an ENT if the problem persists or worsens
Key Takeaway
A blocked nose and smell loss are often linked. If you’re struggling to recover your sense of smell, checking for nasal airflow issues is a smart place to start. Understanding the health of your nose should be your first step.
