[Regarding] a woman from whose breasts milk dripped and [the milk] fell into the airspace of an oven, [it is] tamei, for a beverage can transmit tumah whether one was pleased or was not pleased. If she was shovel- ing ashes out of [the oven], and a thorn hit her and she bled, or she was burned, and put her finger into her mouth, [the oven] becomes tamei.