Sniffing out smell disorders
The smell of coffee ? frequently celebrated as one of life’s most pleasurable experiences, even by people who don’t like the taste ? nauseates American Kathy Kurland.
“Coffee is the worst smell. I can’t even describe it,” she said.
Other smells, such as freshly made popcorn, used to make her physically ill. Now, thanks to medication, she can tolerate it.
Kurland has a range of olfactory disorders that block some smells, turn innocuous or pleasant smells offensive and produce phantom smells that can last for days.
Kurland said a chemical caused the condition. It started about three years ago and progressively worsened. “I thought I was going to have to live in Alaska by myself, where there were no smells,” she said.
Her condition is not imagined or psychological. It is real. It has a name and a growing cadre of doctors and researchers are devoted to it.
There are support groups to help people like Kurland ? those who have lost their ability to smell, a condition known as anosmia, those whose sense of smell is distorted, called parosmia, and those who smell things that are not there, phantosmia.
Kurland’s research led her to one doctor who prescribed a medicine that made the condition manageable, but it has not eliminated it.
When organisms first swam in the primordial sea, the ability to smell chemicals is what kept them alive. Smell is the first bond between baby and mother. A scent can transport us to a place or time, draw us in or warn us of danger. Yet of the five senses, smell is the least studied and least understood.
Many things lead to smell loss or dysfunction ? chronic sinus disease, chemotherapy, chemicals, medications and head injuries. But researchers are not sure precisely what causes the condition because of the unique function and location of the olfactory nerve cells that transmit information to the brain.
Losing the ability to smell could have far-reaching implications that are just beginning to be explored. The most obvious consequence is the effect on the ability to taste.
Although it is a separate sense, taste is irrevocably linked to smell. About 90 per cent of taste comes from smell.
Smelling disorder recovery rates are not high, but recovery can occur, sometimes years later. The improvement can be gradual or sudden.
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