>>718035226
Erika is a perfumer.
I haven't kept up with Claude but if it's talking to an NPC and it discusses that Erika makes or enjoys perfume, it could be interpreting that as needing to get perfume to enter the gym or challenge Erika.
Instead of it just being flavor text to characterise someone.

If there's nothing in the game itself about perfume, it could be referencing online material that goes into detail about Erika and perfume, which is prevalent in the anime and TCG.