Question: How does a face mask protect me?

Answer passage (source: UK):
page_title: Guidance Coronavirus outbreak FAQs: what you can and can't do
section_headers: Going to work / Safer spaces
Will a face covering stop me getting COVID-19?
section_content: The evidence suggests that face coverings can help us protect each other and
reduce the spread of the disease if you are suffering from coronavirus, but
not showing symptoms.
To protect yourself, you should continue to follow social distancing measures
and isolation guidance and wash your hands regularly.

Reviewer feedback on this answer:
Does not give an answer to the question. Only talks about social distancing measures.
This does not answer how face mask actually help you but it does give information about social distancing and other isolation guidance.

Reviewer ratings:
Bad
Bad

Answer passage (source: UK):
page_title: Construction and other outdoor work
section_headers: 6. Personal protective equipment (PPE) and face coverings
6.1 Face coverings
section_content: There are some circumstances when wearing a face covering may be marginally
beneficial as a precautionary measure. The evidence suggests that wearing a
face covering does not protect you, but it may protect others if you are
infected but have not developed symptoms.
A face covering can be very simple and may be worn in enclosed spaces where
social distancing isn’t possible. It just needs to cover your mouth and nose.
It is not the same as a face mask, such as the surgical masks or respirators
used by health and care workers. Similarly, face coverings are not the same as
the PPE used to manage risks like dust and spray in an industrial context.
Supplies of PPE, including face masks, must continue to be reserved for those
who need them to protect against risks in their workplace, such as health and
care workers, and those in industrial settings like those exposed to dust
hazards.
It is important to know that the evidence of the benefit of using a face
covering to protect others is weak and the effect is likely to be small,
therefore face coverings are not a replacement for the other ways of managing
risk, including minimising time spent in contact, using fixed teams and
partnering for close-up work, and increasing hand and surface washing. These
other measures remain the best ways of managing risk in the workplace and
government would therefore not expect to see employers relying on face
coverings as risk management for the purpose of their health and safety
assessments.
Wearing a face covering is optional and is not required by law, including in
the workplace. If you choose to wear one, it is important to use face
coverings properly and wash your hands before putting them on and taking them
off. You should be prepared to remove your face covering if asked to do so by
police officers and staff for the purposes of identification.
Employers should support their workers in using face coverings safely if they
choose to wear one. This means telling workers:

wash your hands thoroughly with soap and water for 20 seconds or use hand sanitiser before putting a face covering on, and after removing it
when wearing a face covering, avoid touching your face or face covering, as you could contaminate them with germs from your hands
change your face covering if it becomes damp or if you’ve touched it
continue to wash your hands regularly
change and wash your face covering daily
if the material is washable, wash in line with manufacturer’s instructions. If it’s not washable, dispose of it carefully in your usual waste
practise social distancing wherever possible

You can make face-coverings at home. Find guidance on how to wear and make a
face-covering on GOV.UK.
*[PPE]: Personal protective equipment

Reviewer feedback on this answer:
Provides very detailed information on face masks such as guidance to wearing one and also how employers can support their employees who are wanting to wear one.
This answer provide a very detail and very informative answer about how mask helps will protects you. This also provides links to a government site to with additional help.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: UK):
page_title: Guidance Stay at home: guidance for households with possible or confirmed coronavirus (COVID-19) infection
section_headers: While you are self-isolating, make sure you do the following things
Face coverings
section_content: Used correctly, a face covering may help to protect others by reducing the
transmission of coronavirus (COVID-19).
If you have possible or confirmed coronavirus (COVID-19) and you live with
others, consider using a face covering inside your home when spending time in
shared parts of the household, in addition to avoiding contact with other
members of the household as much as possible. You must still stay at home for
at least 7 days from when the symptoms started and wearing a face covering
does not replace this.
Further guidance on the use of face
coverings is available along
with instructions on how to make your own face
covering.

Reviewer feedback on this answer:
Provides information on how a face mask can protect someone and also provides guidance on best way to use one.
This does a very simple explanation on how face mask might help with the reduction of transmission. It also provide some links for extra information

Reviewer ratings:
Acceptable
Could be Improved