Sports health products are marketed to people with coughs and colds.
Some products can be used to treat coughs in the short term, while others are designed to help people avoid colds in later life.
Some people with respiratory problems have to wear masks, such as those in the workplace, while those with allergies have to remove their face masks if they’re at home.
But the mask is often not necessary, according to experts.
What you need to know about nasal sprays and nasal spray products, and how to use them. Read more