Image 1: Tarokaja and Jirokaja fan the "poison" to keep the fumes away, while Jirokaja edges up on it.

Image 2: Jirokaja tries the "poison" and discovers that it is actually a kind of brown sugar. Note how he uses the fan.

Source: Monogatari de narabu Nihon no kotengeino 2: Kyogen (Kumo Publishing Company 2004)