How much marijuana second hand smoke does it take to get a positive drug test?

I got drug tested a couple days ago (Wed.) and the Saturday before I got a little bit of second hand smoke from a friend. It was just 1 small inhale, I was just able to only smell it really. No harm right? Because they send it to the lab, it isn't just one of those home test kits. I haven't actually smoked myself in over a year.
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Drug Test Kits