The world health organisation and many others acknowledge that a runny nose can indeed be a symptom in a minority of cases.

Also:

[quote] However, Kalpana Sabapathy, a clinical epidemiologist at the London School of Hygiene and Tropical Medicine told BBC Future drinking water doesn’t kill coronavirus.

Ms Sabapathy explained infections often begin after we’ve been exposed to thousands or millions of viral particles, so sweeping a few down the oesophagus is unlikely to have much of an impact.

She said: “One gaping hole in it is the likelihood that you managed to flush all of them down into your stomach.

“You would probably have already got them in your nostrils by then, for example – it’s not fool proof.”
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