Air Purification Myth
Some claim that salt or lemons can absorb “negative ions” or toxins from the air. Modern science doesn’t support this. Experts looking at similar claims—like salt lamps—found no evidence they improve air quality or kill pathogens. True air cleaning requires ventilation or an air purifier with a HEPA filter.
Natural Insect Repellent
Citrus oils like d-limonene can act as mild insect repellents. While some citrus oils are used in natural pesticides, lemon is one of the less effective options. A lemon on a plate might deter a few fruit flies, but it’s not a reliable bug-control method.
Health and Wellness Effects
Mood Improvement
Citrus scents can help people feel more relaxed. Studies, including one in Japan, found that smelling yuzu (a lemon-like citrus) for 10 minutes lowered stress and depression. Even though a lemon slice is less potent than essential oils, the subtle aroma can still lift your mood.
