Lemons are a great way to add brightness to your meals, but they're also a great scent refresher. Simmer a few lemons on the stove or simply bake them in the oven. Either way, lemons are a great option for a clean aroma.
Vinegar is something most everyone has handy, and it works as a great natural cleaner and refresher. It's as simple as filling a dish with 1/2 inch of white vinegar and setting it out. For a faster and more effective option, try simmering the vinegar on the stove for an hour. This will neutralize any musty smells.
Lavender is used to reduce anxiety and help you sleep better. Leaving a vase filled with lavender anywhere in your home creates a sweet and clean scent.
Vodka is an amazing odor neutralizer as well as disinfectant. Spray onto fabrics or surfaces, to rid them of any musty smells and to disinfect.
Eucalyptus is a common favorite scent. Hang fresh eucalyptus the bathroom so that the moisture will release their fragrance into the air, making you feel relaxed and peaceful. This scent can last up to four weeks, or until the sprigs dry out.
Source: credited to; Martha Stewart