Fart in a jar, add a gas meter to your character, it raises on its own but drinking stuff like beer or eating certain foods will make it raise faster. You can use up a part of the fart bar + a glass jar used for pickling to create a fart in a jar that you can study, but not only this, stay with me, you can right click it to open the jar and then sniff the fart for a small wound that gives a bonus to will for an hour dependent on the fart quality (higher stats characters will produce higher quality farts, based on the average of 3 highest stats), of course the jar is resusable and maybe we can even make it approach the quality of the fart the longer the fart is inside, just like leeches approach your constitution number when used. This way smol hermits that need more will to travel can be given some farts to sniff whenever they want to trade with you. Finally we can make trading approachable to an average hermit again, and this time it will be epic.
Also if the gas meter reaches full your character will start making fart noises when running around and get a reduction to charisma, to prevent that you have to walk on speed 1-2 so you can clench your butt cheeks as you walk, after all no quest giver wants to deal with a farter (this could be expanded upon in the tree conversations update). A way to release the gas without making a curio could be an action or a hearthmagic spell that alerts everyone in a certain radius to your location depending on how much gas meter you have filled up. Edit: IT SHOULD LEAVE A SCENT, I'M A GENIUS