Clinical trials
Olfactory Dysfunction clinical trials
Below are recruiting olfactory dysfunction clinical trials, each written for real people, not researchers. We’re tracking 14 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06829706Recruiting
Modified smell training for smell loss after a virus
This study tests a new way of doing smell training to help people whose sense of smell has not recovered after a viral illness. It may help you smell things better again.
BeijingAges 18–80 - NCT05364125Recruiting
Smell training for people with long-term smell loss
This study tests whether structured smell “training” can improve smell problems. It’s mainly for people who have had reduced smell for more than 6 months but less than 5 years.
Hong KongAges 18–70 - NCT05539560Recruiting
Olfactory training for loss of smell after COVID-19
This trial studies whether daily smell training can improve smell loss caused by COVID-19. It may help people regain smell and possibly reduce related symptoms like distorted smells.
CopenhagenAges 18 years+ - NCT07021040Recruiting
Nasal biopsy study for Alzheimer's and smell disorders
This study takes a small tissue sample from inside your nose to look for changes linked to Alzheimer's disease or smell problems. It may help us better understand how these conditions affect the brain.
Durham, North CarolinaAges 18 years+ - NCT06733636Recruiting
Smell training for older adults with smell loss
This study tests whether a special device can help older adults regain their sense of smell through regular training with different scents. It is designed for people who have lost smell due to aging or other causes, not from birth.
Baltimore, MarylandAges 60 years+ - NCT05384561Recruiting
Training your sense of smell to help after COVID
This trial studies whether structured smell (olfactory) training can improve ongoing smell problems after COVID-19. It may help people whose sense of smell hasn’t fully returned long after the infection.
Trois-Rivières, QuebecAges 18 years+ - NCT06482138Recruiting
Why smell may change after COVID-19: a nose tissue study
This study looks at why some people lose or change their sense of smell after COVID-19. Researchers will take a tiny sample of tissue from your nose to study the cells and molecules involved.
Brussels, Brussels CapitalAges 18–70 - NCT05740683Recruiting
Studies alpha-synuclein and brain symptoms in smell loss
This study looks at whether a specific brain protein (alpha-synuclein) is linked to other neurologic symptoms in people who have long-lasting smell loss. It may help researchers understand what causes smell loss and how it relates to later brain or nerve changes.
CopenhagenAges 55–75 - NCT05855369RecruitingPhase 2/Phase 3
Smell training plus brain stimulation for long COVID smell loss
This study tests whether a combination of smell training and a type of nerve stimulation can improve persistent smell problems after COVID. It is meant for people who had normal smell before COVID and still struggle with smell changes months later.
Charleston, South CarolinaAges 18–65 - NCT06874426Recruiting
How nose surgery on the skull base affects smell
This study looks at how having skull base surgery through the nose affects your sense of smell. It helps doctors learn more about changes in smell after this procedure.
Leuven, Vlaams-BrabantAges 18–70 - NCT07681973Recruiting
Smell training for loss of smell in sinus patients
This study tests whether smell training can improve your sense of smell and affect your immune system. It is for people with chronic sinus inflammation and nasal polyps who have lost their sense of smell.
Cleveland, OhioAges 18 years+ - NCT06600438Recruiting
Slow walking study for loss of smell
This study tests if a slow walking program can help prevent Parkinson's disease in people with a reduced sense of smell. You will be randomly assigned to a walking group or a control group and followed for 18 months.
LondonAges 40–100 - NCT06456008Recruiting
Smell and taste loss registry study
This study tracks patients with smell or taste problems at an ear, nose, and throat clinic to learn more about their conditions. Participants will do simple smell/taste tests and fill out questionnaires.
Leuven, Vlaams-BrabantAges Any age - NCT05379556Recruiting
Study for long COVID sexual and reproductive symptoms
This study is looking at people who have recovered from COVID-19 but still have ongoing (long COVID) sexual, reproductive, or related symptoms. Researchers want to learn about these lingering problems and what may help, based on your answers and study procedures.
Naples, ItalyAges 18 years+
Hear when a new Olfactory Dysfunction trial opens
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Common questions
- Are there clinical trials for olfactory dysfunction?
- Yes. Clin2 currently lists 14 recruiting olfactory dysfunction studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a olfactory dysfunction trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a olfactory dysfunction trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.