|Ah yesh they knew how to make real perfumesh in Fraigonard'sh boutiquesh in Nineteen Shixty Shixsh...
Using this skill makes Frieda temporarily gain the Immunized status and therefore become immune to all forms of spore transmission including 'Do the thing'.
It can be useful if Chun is inactive or dead to actively remove traps or eat dubious food. But acting as a Mush bait is unrealistic, as they would have to be stupid enough to overlook the Immunized Symbol.
Another use is to shower right before an expedition that carries the risk of mush traps, as any risk of infection would be negated while the skill is active.