What would you do if your maid was allergic to certain foods? would you still bring them into the house?

Have not encountered this issue myself. But I will still buy the food but remind the maid not to consume those food items. If meals were prepared with those food, always ensure that your maid prepare her own meal separately. I'm sure if your maid is aware of her allergies, she will also be careful not to consume those. Just highlight to her that it is alright for her to prepare her own meals when dishes with her food allergies are cooked for the family.