Dehumidifying is critical because this will ensure that you remove any excess moisture and will dry things up. You can either upgrade the dehumidifier or you can purify the air.
It’s also critical to make sure that the sun can get in every nook and cranny. UV light is a natural disinfectant and this dry heat can remove smells.
When you are removing mold, you might be getting rid of the smell in the short term, but you’ve got to remember to remove spores too.
Cleaning out the drains with natural cleaning agents such as baking soda and vinegar will make a massive difference.
If you think that it’s best to get a fresh coat of paint, it’s better to give the walls and ceiling a clean first.