That's great. But my question wasn't about how long it stays in your system.
Yeah but here's the problem. You stated...
I've read says 2 weeks should be good to pass the test.
Leading me to believe that if you bet on that you may fail a test and therefore lose out on a job.
We read a lot of things, but that thread more or less proves that what you read isn't really true. And posting the link to counteract your info helps others who will undoubtedly find this thread when worrying about cotinine tests.
Also, I failed to see an answerable question, so I tried to help you out in another way. You see, no one truly knows how well stainless steel, glass and plastic hold on to nicotine even after a good washing, if at all. Therefore no one can answer that question becuase I doubt anyone here (or anyone in the world) has sent a used but washed atomizer to a lab to test for nicotine residue.
Best bet would be to use a brand new tank if you have doubts. It's not that expensive an option when you take all things into consideration.