Hi There, Yes I have experienced this too and it made me think I was going crazy because everyone around me could not smell the choking smoke, and they all looked at me as if I was nuts. Now that you mention it I have not had it for a while now but it did last several months at the time. Hopefully it will go away for you too very soon. I hope I haven't jinxed myself and it come back. :-) Cheers.