A list of coronavirus tips claiming to be from Stanford is being shared widely online, despite the fact that suggestions could put people at risk.

It includes a host of tips that suggest people can avoid catching Covid-19 with useless behaviour, and suggests ways of checking whether they already have it that would not work.

Nonetheless, it has been shared perhaps hundreds of thousands of times, sweeping across the internet as people look for ways to protect themselves from the disease.

The list begins with a message indicating that it has come from a member of the Stanford Hospital board. That part of the message seems to be entirely false.

“A widely distributed email about COVID-19 that is attributed to a ‘Stanford Hospital board member’ contains inaccurate information," a Stanford Health spokesperson told The Verge. "It did not come from Stanford Medicine.”

It then goes on to propose a list of ways of avoiding the disease. It suggests that swallowing it is safe, that it will die if the weather is warm, and that regularly drinking water will protect people from catching the virus.

None of those are true. Experts dubbed parts of the advice "totally bogus", and while some parts of the list are based on science – such as the fact that sunlight can work as a disinfectant – it is entirely useless as practical advice.

The list also indicates that people can tell whether they have Covid-19 by holding their breath for 10 seconds. If they are able to, then their lungs cannot be damaged, and it "basically indicates no infection", the message reads.

It is impossible to know how many people have seen the fake tips, since they are being copied and shared in private conversations. But individual tweets including them have been shared tens of thousands of times.