If the flea was on you, doesn't that mean it jumped off the dog, which is what you want?
Or were YOU using the Advantage?
I have a Husky, and use Advantix (That's Advantage plus tick prevention).
We still get a tick every now and then, but other than that, I have noticed no issues.
Just make sure you get the medicine onto the skin, not the fur. As you know, huskies have a double layer of fur, so you gotta fight your way through to apply it.