[Ghost Hunting Ghost], according to Japan's naming habit of evil spirits, Lann can probably glean key information from this name.
This monster, resembling an ape ghost, seems to be a 'ghost formed by hunting ghosts'.
Not only do dead people and diseases produce [Residual Filth], but even contact and attack with monsters will contaminate with [Residual Filth].
Those with guardian spirits don't care about this slight filth; in fact, because of their guardian spirits, most of the filth gets purified as they walk around.
But even if it's true as Wuming says, hunters like her have formed a group called [Chuye Shizong Group], then not everyone in this group can have a guardian spirit.
Those who don't have a guardian spirit hunting monsters will inevitably get contaminated with [Residual Filth].
If they are always cautious and clean themselves properly each time they kill or contact a monster, it's manageable.
The problem wouldn't be significant.
