This odor comes on slow and intermittently over a couple days and then full on for a period of a week or two and over that time it's mostly here but comes and goes and is sometimes stronger from room to room or place to place, it's outside as well and in cars but it varies everywhere. Could barely smell it in my living room the other day but was very strong in my bedroom, one day it was barely noticeable around my home but when I went to Sam's club it was very strong and when I walked out it was barely noticeable again so I know it's not me since there are places where it has a heavier presence that I can notice as I walk in and out of them. It's from an external source and no one else smells it but me. It reoccurs every year and I dread it's coming, it's so annoying, especially because it's so strong and I can't find anyone else that can smell it. This year, 2014 it started on May 10 and is still here on May 20. The last time it was Dec 10-19. 2012. And when it leaves it's gone for good until a year or so later, that's been the pattern for many years now. The smell is very hard to describe as it smells like nothing else, definately not a burning or flesh smell that others have reported. Best I can describe is after it hasn't rained in a long time and the first few drops of rain begin hitting the ground there is the smell of the accumilated dust and dirt being kicked up by the drops. It's an "earthy" odor as if it's coming up from the ground but it's not raining although there was an earthquake here a couple of months ago. When I smelled it heavy in my bedroom I stuck my nose up to the window screen and it was not in the wind coming in although other times outdoors I have smelled it on the wind although the wind is not a factor. If you have had any experiences like these please let me know I'm not alone in this unbelievable anomally that is occuring in the Orange County/LA County area of Southern California and maybe elsewhere.