It is quite common to experience a strange smell or taste in the throat after recovering from an illness, especially if you recently had a viral infection, fever, cold, or throat infection. After such episodes, the nasal passages and throat can remain mildly inflamed, and mucus may still be draining down the back of the throat. This post-infection inflammation often disrupts smell and taste receptors temporarily, causing a metallic, sour, or unusual smell/taste sensation. Sometimes residual sinus congestion or mild post-nasal drip can also give this feeling. This is not dangerous and usually settles on its own in a few days.
Next Steps
If the symptom persists beyond a week, or if you develop fever, worsening throat pain, or foul-smelling mucus, a doctor can check for sinusitis or a throat infection. For now, staying hydrated, doing warm salt-water gargles twice daily, steam inhalation, and maintaining good oral hygiene generally helps the sensation disappear faster