This was posted today.

October 17, 2012 in Neuroscience
Changes in the ability to smell and taste can be caused by a simple cold or upper respiratory tract infection, but they may also be among the first signs of neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease. Now, new research from the Perelman School of Medicine at the University of Pennsylvania has revealed an association between an impaired sense of smell and myasthenia gravis (MG), a chronic autoimmune neuromuscular disease characterized by fluctuating fatigue and muscle weakness. The findings are published in the latest edition of PLOS ONE

Not for me...my husband calls me "the bloodhound."

I have never had much of a sense of smell. I always figured that it was to my advantage in my line of work.

I've never had a good sense of smell. Interesting. Although I always manage to smell the things I hate the most the strongest (coffee, bacon...lol).

Impaired?
Not for me anyway, I smell stuff miles away! I also am a "super taster".
So I don't think mine is impaired. But it can be because I've tried to be more like a dog all my life

Heightened sense of smell for certain odours - but started in pregnancy and then never ever went away!