First, some boring (and uncontested) facts:
A particle needs to be 10 microns or less before it can be inhaled into your respiratory tract.
The width of a human hair is 50 to 180 microns.
Respiratory droplets are 5 to 10 microns and have to potential to carry smaller particles within them, such as dust or coronavirus. On a cold day, you can see your breath cloud when you exhale.
A red blood cell is 7 to 8 microns.
Bacteria cells are 1 to 3 microns.
Campfire smoke particles are 0.4 to 0.7 microns.
Tobacco smoke as it comes from a cigarette is an extremely concentrated aerosol with a relatively stable distribution of sizes ranging from 0.1 to 1.0 micron, peaked between 0.2 and 0.25 micron. The initial concentration of normally obtained smoke was found to be 3 × 109 (3 billion) particles per cubic centimeter. When cigarette smokers exhale a puff from their cigarettes, you can see the smoke cloud.
Coronavirus is 0.1 to 0.5 microns.
My wife and I are both non-smokers. If you are a non-smoker, you will probably understand what I’m about to say. One day (years ago), my wife (an OB/GYN) came back home from a visit with her business partner and our friend. I asked, “How is [the business partner] doing?” Astonished, Wifey asked how I knew that she had had a meeting. I replied that [the business partner] is a smoker and that Wifey’s clothing smelled of cigarette smoke. Cigarette smoke particles are 0.2 to 0.25 microns and Wifey and I both breathed some in that day.
All it takes is a single active Coronavirus to infect somebody who’s body is not immune to it.
Aerosols are emitted by a person infected with coronavirus — even one with no symptoms — when they talk, breathe, cough, or sneeze. Another person can breathe in these aerosols and become infected with the virus. Aerosolized coronavirus can remain in the air for up to three hours.
While all children are capable of getting the virus that causes COVID-19, they don't become sick as often as adults. Most children have mild symptoms or no symptoms.
According to the American Academy of Pediatrics and the Children's Hospital Association, in the United States children represent about 10% of all COVID-19 cases. Research suggests that children younger than ages 10 to 14 are less likely to become infected with the virus that causes COVID-19 compared to people age 20 and older. Hospitalization rates for children are also much lower than for adults. However, if children are hospitalized, they need to be treated in the intensive care unit as often as hospitalized adults, according to research from the Centers for Disease Control and Prevention (CDC).
If someone who is immune to the Coronavirus breaths in an active Coronavirus, it will not infect that person but, when breathing back out, the active Coronavirus can be exhaled, as well. The virus is susceptible to disenfectants containing 0.1% sodium hypochlorite, 0.1% organochlorine, 10% iodophore, 70% ethanol and 2% glutaraldehyde. Human breath does not contain this disenfectant.
Hypothetically, if person A is an active carrier of the Coronavirus and breathes out near person B who is immune to the Coronavirus, and then person B walks across the room to speak with person C who is not immune to the Coronavirus, it is possible for person A’s infection to travel to person C via the breath of person B.
Finally, the Coronavirus can be transmitted by touch only. If a person infected with the Coronavirus breathes on a table, chair, or cup, the Coronavirus can remain active on those items for up to three hours. Someone touching a surface harboring the Coronavirus can infect themselves simply by transferring it from their fingertips to their eyes, nose, or mouth.
So: no matter who you are, President of the United States or Average John Doe, infected, not infected, immune, not immune, inside or outside, wear a face mask and don’t touch your face with your hands. Wash your hands with soap and water for at least 20 seconds when you get back home from a possible exposure. Until the reported vaccines get a good foothold on the human population, if possible, STAY HOME with your loved ones.
“And if you can't be with the one you love, honey, love the one you're with.” – The Isley Brothers.