Most of us expect to feel a bit rough after a cold or flu, but what if your symptoms don’t go away, even weeks later? If you’re still dealing with a blocked nose, reduced sense of smell or a constant need to clear your throat, you’re not alone.
In recent years, ENT clinics across the UK have seen a rise in lingering symptoms after viral infections, including COVID-19, RSV and seasonal flu. Some patients recover quickly, while others are left with inflammation that doesn’t resolve on its own.
This blog explains the most common post-viral ENT symptoms, why they happen and when it’s time to see a specialist.
Common Post-Viral ENT Symptoms
Some of the most reported issues after a viral infection include:
- Blocked or stuffy nose that doesn’t clear
- Reduced (hyposmia), absent (anosmia) or distorted sense of smell (parosmia)
- Mucus in the throat or frequent throat clearing
- Dry cough that lingers for weeks
- Ear pressure, popping or mild hearing changes
- Voice fatigue or hoarseness
These symptoms are often caused by inflammation in the nasal passages, sinuses or throat, which can persist long after the infection itself has passed.
Why Do Symptoms Linger?
After a viral illness, your body can take time to fully recover. Inflammation in the nasal lining, eustachian tubes, or larynx (voice box) may persist for weeks. In some cases, the virus may have damaged the nerves responsible for smell or triggered an immune response that keeps tissues inflamed.
You might also have developed secondary sinusitis or post-viral rhinitis, where the nose remains swollen and congested without active infection.
In some patients, symptoms like distorted smell (everything smelling burnt, chemical or rotten) can be especially distressing. This condition, known as parosmia, has been widely reported after COVID-19 but can also follow other viral infections.
When Should You See an ENT Specialist?
It’s time to seek help if:
- You’ve had symptoms for more than 4–6 weeks
- Your sense of smell is still affected or getting worse
- You’re experiencing sinus pressure, facial pain or coloured mucus
- You’ve tried over-the-counter nasal sprays without success
- Your voice or throat still feels irritated or strained
A specialist can perform a nasal endoscopy to assess your sinuses and nasal passages, and offer targeted treatment such as nasal steroids, saline irrigation, or therapy for smell retraining.
Find out more about how we treat sinusitis and post-viral symptoms
Final Thoughts
Not all cold or flu symptoms clear up in a week. If you’re still congested or your smell hasn’t returned properly, don’t wait it out. Persistent nasal or throat issues could point to inflammation that needs specialist care.
At London ENT, we’re experienced in managing post-viral recovery, from smell loss to chronic congestion, and can help you get back to normal faster.