Question

when we cough how many km they travel​

Answer 1

But according to research by scientists at the Massachusetts Institute of Technology, it's not just the person next to us we should worry about: coughing spreads droplets as far as six metres, and sneezing as much as eight metres. These droplets stay suspended in the air for up to 10 minutes.

Answer 2

Answer:

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★ That means the momentum of a cough can push droplets of a respiratory virus as far as 19 feet away, and a sneeze can push droplets up to 26 feet away, depending on the room's humidity, temperature and air flow