Since we get a lot of questions about this, here are some links describing the anti-viral, anti-bacterial and anti-fungal properties of salt:
Antiviral Properties
- University of Edinburgh research showing salt can inhibit many types of viruses
- Interesting article about salt-coating for surgical masks, to kill viruses
- WebMD recommending salt rinse and sprays for flu symptoms
Antibacterial Properties
- BBC Science articel explaining antibacterial properties of salt
- For centuries, salt has been used to preserve food, because of its antimicrobial properties
Antifungal Properties
- Scientific article about specific antifungal effects of salt (studied in amphibian disease)