What should I do if I notice a rotten milk smell in my house?

If you notice a rotten milk smell in your house, you should try to locate the source of the smell and dispose of it properly. This could involve checking the refrigerator for spoiled milk or other food items, cleaning up any spills, and ensuring proper ventilation in the area. If the smell persists, it may be a sign of a larger issue such as mold or mildew, in which case you may need to seek professional help to address the problem.