Weird smell after stopping epilepsy medication

Doctors prescribed me 'levetiracetam' as a precaution after an episode where I lost consciousness and had a brain injury. After series of tests over 6 months, all tests came out normal. EEG, taken after a month off medication, was also normal. Its been about 6 weeks since I am off medication. 

Over the last month, I had been complaining of weird smell in the home/car etc. that nobody else seem to feel. It became clear to me after a while that it was me. I can often smell something pungent or metallic and smell that even more when I breathe deeply. It does not bother me other than the fear that something is not right. Google search threw out some material related to olfactory hallunications. My neurologist told me not to worry for now (since a normal EEG was pretty recent) but to be cautious. She felt that this would go away in time. I play golf twice a week and work six days a week. So I am generally healthy. I do smoke about 10 cigarettes a day.

I was wondering if this 'smell' is a side effect of the epilepsy medication that I took for nearly 5 months. I sincerely appreciate any thoughts on this situation. Thank you.