Suey, don't discount the above list out of had it actually has sound scientific evidence behind it and is certainly logical.
1 Drink lots of hot liquids coffee soup teas warm water in addition Sip warm water every 20 minutes this keeps mouth moist & washes virus into stomach where gastric juices neutralise it, before it can reach the lungs and damage them. Whilst this is likely not to affect the Covid-19 virus itself it could help by a secondary method of keeping one's fluid intake up and lessening the effects of flu and colds on the lungs.
2 gargle with an antiseptic in warm water like vinegar lemon or salt, again this will probably not stave off the Covid-19 virus but it will help to reduce sore throats etc. and make you feel better. You are more likely to stay healthy if you feel fit and healthy than if you feel down and miserable.
3) Virus attaches to hair and clothes take a bath or shower after being out in street avoid sitting down before taking bath/shower There is good scientific evidence to support this which is exactly why people are told to wash their hands, this is just taking it one step further if you have been out and possibly carried the virus back home on your hair or clothes.
4) wash cloths daily, wash metallic surfaces daily don't touch handrails or door handle again science has proven that the virus survives for long periods of times on non absorbent surfaces, washing such surfaces may remove the virus from them and not touching surfaces others a likely to touch will certainly help protect you.
5) Don't smoke , smoking and vaping has been shown to compromise the lungs not smoking or vaping gives them a chance if attacked by the virus.
6) wash hands for 20 seconds every 20 mins using any soap that foams current advice from medical experts.
7) eat fruit and vegetables daily try to elevate zinc levels fruit and vegetables add roughage to the diet and help to evacuate the bowels, it has been scientifically shown that stools can contain the virus to clearing them from the body as soon as possible must be a good thing
8 ) Animals do not spread the virus, this is based on sound scientific evidence.
9) avoid common flu as it weakens immune system, this is really a repeat of 1 above, flu affects the lungs anything that compromises ones health should be avoided at this time (common sense)
10 if you feel discomfort in your throat attack it with the above methods immediately again common sense defeating Covid-19 requires a healthy body anything one can do to reduce any other infection gives one a fighting chance
As I wrote at the head of the posting I do not know how accurate this advice is but it seems common sense and cannot do any harm to follow.
In other words be sensible and follow normal rules of hygiene, it is like hand sanitiser most hand sanitisers do not contain enough alcohol to provide any defence even straight Vodka is too weak, but washing hands does work and using hand sanitiser when this is not available reinforces the practice.
Cheers
Guy