Hi, I accidentally are a piece of cake (which was baked in a meat oven more than 12 hours prior) with a piece of pizza (i forgot the cake was baked in a meat oven). The ingredients of the cake are piece, but did I actually eat something non-kosher and now have to throw up? Also for future reference would this mix be kosher?
Food should not be cooked in a meaty oven in order to be eaten with dairy. If is was baked without this intent, after the fact it may be eaten in a dairy meal.
In any event, one who accidentally eats non kosher has no obligation to vomit up the food.