User blog comment:Miskos3/Fairy Tail Chapter 486: The Fourth Guest, Review/@comment-7418318-20160525151848/@comment-5894890-20160528194111

@CNBA "Quick question, how can iron be poisoned?" What the... That isn't even close to what we're arguing about. We're talking about how iron can act as a filter. Again, Gajeel is still human. How will iron prevent MBP from entering his human parts; blood/ flesh as he breathes? I don't know where you got that assumption that ANYONE was even arguing an absurd point like that. "Besides I have already explained my peace which is making his iron lungs operating as air filters which is the removal of dust, pollen, mould and bacteria from the air including other airborne contaminants such as organic volatile compounds and ozones." Thing is, as I've been saying this entire time, iron can't filter no matter how much you want it too. Ask yourself how iron can let certain things in/ out. More on your gas mask logic below. And by your logic, if solids don't work, then gas masks should be useless as well because it is made of solid material as well. And if you say the do work because it is their purpose then Iron Lungs work as well when Gajeel constructed them to do just that. I... just no. This is how a gas mask filter works http://s.hswstatic.com/gif/gas-mask1.gif It has nothing to do with the solid. "Water won't work because MBP is not liquid, it's particulates, if Wendy's sky magic effects MBP then they wouldn't have been in the mess during Tartaros, Natsu's flames would have hurt Keith but didn't." Glad you're using logic. However... you think iron will work better than any of these? I simply trying to make examples that will work way better than iron. Water, again, is semi-permeable. Will it let stop certain things (sand, dust)? Yes. Will it let certain things in (oxygen, gases)? Yes. This is the purpose of a filter. Iron... will it stop certain things (sand, dust) Most certainly. Will it let certain things in (oxygen gases)? No. Is this even a filter? No. Does water work better than iron as a filter? yes. Even if Gajeel shaped the iron into a sieve (which I'm already bending the logic quite a bit to make it work as a filter), like with holes or something, it won't work. MBP is likely a gas (like Oxygen), and will pass through and enter his bloodstream along with the oxygen. "Of topic, but if a magic can be explained as something reasonable then it wouldn't be considered magic would it, it would be science, why not just call all magic science isn't?" I actually touched on this, but I'll just quote Nick since he explained it better: "If Mashima didn't try to (partially) explain stuff scientifically that'd be a good argument, but unfortunately Mashima did use (or rather tried to use) somewhat scientific explanations to justify certain effects... it's just that he has seems to have little clue on actual science so his explanations... fall short more often than not." Anyways, it seems MBP is like any other poisonous chemical? It really only has potent effects when inhaled/ ingested.