Washing your hands, if possible avoiding travelling, and staying at home if you have been in any at risk areas, are all important tips to avoid being infected and reducing the risk of the coronavirus spreading. But since the virus is airborne and settles in the airways, the way we breathe is also important to highlight.
In a single day, we breathe in as much as 10-20,000 liters of air. That is a huge amount, and since one liter weighs 0.1 gram it makes up 10-20 kilos of air, in other words about 10 times more than the amount of food we eat. The air contains lots of bacteria, viruses and other particles. In just one day, we inhale up to 100 billion of them according to research at the Karolinska Institute in Sweden.