Wearing a mask is unlikely to be of any benefit if you are not sick.
If you do need to wear a mask, here is how to use one properly.
How to put on and wear a face mask properly
Clean your hands properly before you put it on.
Cover your mouth and nose with the mask and make sure there are no gaps between your face and the mask.
Tie the mask securely.
Replace the mask as soon as it is damp.
Do not touch the mask while wearing it – if you do, clean your hands properly.
Do not use a damp or wet mask.
Do not reuse a mask.
Taking a mask off
To take a mask off properly:
• remove it from behind – do not touch the front of the mask
• put it in a bin straight away
• clean your hands properly