What causes Parosmia?
More than half of people who lose their sense of smell due to a virus will go on to have parosmia.
Although the exact reason parosmia occurs is unclear, the prevailing theory is that when the olfactory nerves (which connect your nose to your brain) are damaged by a virus, head injury, the connection between your nose and brain is broken.
When the nerves start to regrow, they may go to a different spot in the brain than before, resulting in a distorted sense of smell.
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