We will not stop the spread of Coronavirus until people stop flying.
Why ?
The air on an airplane is as dry as the Sahara Desert.
It is the perfect environment to transmit this disease. A few seconds is all it takes. Is your Vacation more important than spreading a virus that could kill hundreds of older people in your town ? In your family ? Your own parents ? .
Most modern aircraft recycle about 50 percent of cabin air, with the remaining 50 percent being fresh, outside air. ... Even though cabin air is exchanged through the system about 20 to 30 times per hour, there remains a risk of airborne disease transmission.
More Importantly ... The air is Too Dry !
As a result people will find themselves coughing and sneezing more after a flight even if the air is cleaned. The culprit is dryness because the typical aircraft cabin is exceptionally dry, probably drier than the air in the desert.
This is because, at the altitude most aircraft fly, the moisture content is extremely low. With dried out sinuses and nasal passages, it's actually easier to catch something passed along from another passenger.
Source: https://www.tripsavvy.com/air-quality-during-your-flight-54164