Living in older homes has its own advantages and disadvantages, but if you live in one and prefer to stay there for long, then you have to do regular inspections to keep it livable. Here are some suggestions:
If you have been using carpet in your floors since you moved in, then you need to check the quality of your carpet. Are there some areas that are worn out and heavily stained? How about that odd smell even if you do some deep cleaning, maybe it is time to change that old carpet.
If you opt to change your flooring, then you need to call for a professional to do some assessment before doing anything on it. This is to prevent damage on the floor and spending more than you need in buying new materials for your new floor.