Hey arjibar.
Welcome to the forum arjibar.
Look up Parosmia. It sounds like a typical case of this condition.
Normally this does not last for too long, unless there's serious damage (or death) to the Olfactory Receptor Neurons, the ones responsible for detecting and identifying scents and odors.
Have you had a respiratory infection recently (upper tract), or head injury, or exposure to any strong chemicals? Any one of these could cause this.
It's a wait and see situation, as medical doctors, usually do not have many treatment options to offer for Parosmia. If one does not like to wait, one of the simplest things to try is topical nasal saline drops. That could provide some temporary relief, as the offensive odor dissipates, in over 50% of the cases.
Also, I heard (through the circles of Energy Medicine Practitioners) that Energy re-balancing through Accupressure Point Tapping and Chakra Balancing, was successful
in treating Parosmia.
You should check with an ENT if this issue persists or worsens.
Hope this helps.
Blessings,
Nikodicreta
Keep 6 coriander seeds in your mouth, and suck slowly.