Fairy Tail S05 E51 Fairy Tail of the Dead Meeeeeeeeen

It's raining "Men" in Magnolia as the "Ichiya virus" turns just about everyone into a shuffling, single-minded sniffing clone of the Blue Pegasus guild master. Only Natsu and Happy seem to be immune, but how can they find a cure when most of Fairy Tail has been Ichified and is intent on stopping them?