Forum:Piercing Plague Javelin

I'm playing with the Amazon for the first time and I want to build a character based on the Plague Javelin Skill. The Plague Javelin Skill explodes in a poison cloud on impact, while the Pierce Skill makes javelin "continue through the victim"; so if I have both skills, whats the outcome for that? Would the javelin pass through the foes without exploding or would it explodes on each foe it pierces?

Ps.: My English is not very good, I'm sorry if the post isn't quite understandable.