Whiffwater Potion (Patreon)

Potion, common

This small glass bottle is in the shape of a nose. The potion inside is a tasteless, gelatinous goo. When you use an action to drink the potion, your breath becomes visible for 1 hour. During that time, you can change what color your breath appears to be. In addition, when you describe a smell using sensory language, your breath's smell changes to reflect the smell you're describing.

If a described smell would normally cause a creature to retch or have a magical property (such as the stinking cloud spell or hezrou's Stench trait), your breath has a smell reminiscent of such an effect, but is otherwise harmless.

They say scent is the sense that evokes the strongest memories. We all know the nostalgic smell of a childhood pie.

However, that doesn't justify your drinking these things whenever you tell the sewer story. Nobody over the age of five is amused, and the brown cloud just makes it tenfold worse.