Noxious fume is a difficult ruleset. Especially if you do not have the Cube. I recommend you rent the Gel Cube
It is one of the worst, and I don't have a good defense for it. I think I will get a cube (price will be double when I do now :D )
I do okay with the earthquake ones using Brighton now. I still have to learn all the combinations and how to stack abilities - my biggest weakness perhaps.
I am really looking forward to Chaos Legion, to see what is on offer - With the amount of SPS I have for the presale - I hope they do half packs! :D