That’s a traditional home remedy / folk practice, but it helps to separate what it actually does from what people sometimes claim it does.
🍋 What this is usually used for
Cutting a lemon, adding salt, and leaving it in a room is commonly believed in some cultures to:
- Absorb bad odors
- Freshen the air naturally
- Reduce humidity slightly
- “Cleanse energy” (a cultural/spiritual belief, not scientific)
🧪 What actually happens
- Lemon + salt does absorb some smells, because salt can draw moisture and odors from the air.
- The lemon’s citrus oils give a light fresh scent.
- But it does NOT purify air in a medical or disinfecting sense. It won’t kill germs or replace ventilation.
⚠️ Important downsides
- It can attract insects (ants, flies) after a while
- It will rot and smell bad if left too long (usually 2–4 days max)
- Not effective for mold, smoke, or strong odors compared to real ventilation
🌬️ Better alternatives for a fresh room
- Open windows daily (most effective)
- Baking soda in a bowl for odor absorption
- Houseplants for mild air freshness
- Essential oil diffuser for scent (optional)
💡 Bottom line
It’s a simple, harmless trick for light freshness, but it’s more of a temporary odor mask than real air cleaning.
If you want, I can show you other natural room fresheners that actually work better or a DIY air purifier hack using cheap materials.