Baking soda, charcoal, and vinegar all work the same way: they absorb odor molecules until they're full, then stop. That's why the smell always comes back.
❌ Baking soda - absorbs, saturates, stops working
❌ Charcoal - same ceiling, needs "recharging" in sunlight
✅ Fresna - destroys odor molecules at the source, never saturates