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Smell test
smell test · olfactory test · sense of smell test · loss of smell
You are asked to sniff different smells and name them or tell them apart. This shows the doctor how well you can smell.
When your sense of smell is reduced or gone, after a cold, a head injury, or for no clear reason.
⏱ Duration: usually 15 to 30 minutes; the doctor tells you the findings during the visit

Be sure to tell your doctor
How to prepare
- Scents. On the day of the test, do not wear perfume or scented cream.
- Food and smoking. Do not smoke or eat spicy food for an hour before the test. Do not chew gum.
- Nose. If your nose is blocked, tell the doctor beforehand. The test may be moved.
What to bring
- Your referral, if you have one
- Your ID
- A list of your medicines
How it goes
- The doctor checks your nose
- A small bottle or a special scented pen is held under your nose
- You sniff for a few seconds
- You choose the name of the smell from a list
- Sometimes each nostril is tested separately
- The smells change. There can be several dozen in total
What you'll feel
- Usually there is no discomfort
- Some smells are hard to recognize. This is normal. Just answer with what you sense
Afterwards
- The doctor explains the result and next steps
- Sometimes smell training at home is prescribed
- You may be referred for more tests of your nose
Common questions
Can my sense of smell come back?
It often recovers, especially after a cold. Training helps, but it takes time.
What is smell training?
Every day, you sniff a few familiar smells one by one. The doctor will show you how.