Dodge (air Passive) And My Many Questions About It.

So far, I have tried all the elements of armour passives except dodge. I want to try to make a weathered build with one, but I will only consider it once I get some answers to my questions.

So dodge is supposed to give additional damage per time spent close to a mob, and the effect fades when you get hit or move too far away.

That is all I know. But I was wondering the following things:
-Does dodge stack?
-What is the range required to activate dodge? Is it specified when the powder is applied on the armour?
-Does dodge give more damage depending on the amount of nearby mobs? So if you are close to 2 zombies rather than 1, do you get double the bonus if you stay close to both?

I appreciate any answers to my questions and thank you in advance for answering them.

Oh, and lastly, to those of you who have tried the dodge air passive in the past, what do you personally think about it? Should I make a build with it, or is it too weak to be viable?

 

air passive on armor sucks

 

its only good for assassin since you're constantly moving and you can blind mobs
its extremely gimmicky and hard to play but rewarding