Before they head out:
Jaina can be seen rummaging through everyone's inventories.
"Erika, Fiona, David, have Joura pack you a good bunch of healing potions and some dustshells."
"Dustshells?"
Erika inquired.
"Dustshells are projectiles which explode upon impact, producing a unique smoke dust."
Fiona answered.
"Then why would we need it?" ← Erika
Fiona lightly handchops Erika after seeing her not knowing about their own unique creation, well, their alchemist's (Joura's) creation.
"Were you not there when Joura presented it to us? The smoke dilutes the ocular sense. The longer someone stays there, the more their sense of sight weakens."
David added-
"And we're not talking about literal vision, but their senses."
Erika playfully brushes her hair.
"Hehe, okay okay I get it."
Fiona and David both narrow their eyes down as if not trusting Erika.