COVID-19 spreads primarily through respiratory droplets from coughing, sneezing, or talking, which can linger in the air for hours, and via contaminated surfaces. This underscores the importance of social distancing and adhering to lockdown measures.
Contamination also occurs by touching infected objects and then your face. Studies show the virus survives 2-3 days on plastic or stainless steel and up to 24 hours on cardboard.
Patrick Pelloux, president of France's Association of Emergency Physicians, warns against beards and mustaches, where COVID-19 can linger for several hours.
Futura Sciences, backed by experts like Axel Kahn, Claudie Haigneré, and Yann Arthus-Bertrand, explored this in "Coronavirus: Are Farts Contagious?" Given that many viruses appear in feces, the question is valid.
The answer, per a British Medical Journal study—one of the world's top general medicine publications—is no.
Microbiologist Luke Tennent from Canberra tested this: a colleague farted 5 cm from Petri dishes, once with pants on and once pants down. Bacteria grew overnight only in the pants-off dish, indicating clothes act as a filter.
This predates the pandemic. China's Tongzhou CDC notes flatulence isn't a proven transmission vector. However, they caution that if someone is naked or expels a large volume of gas, contamination may be possible. Use your judgment.
