It is a specific mutation of the virus, that is able to infect lungs and spread by making you sneeze. The mechanism that makes you sick is also the way to sprea

It is a specific mutation of the virus, that is able to infect lungs and spread by making you sneeze. The mechanism that makes you sick is also the way to spread for the virus. People get viruses all the time from eating bats, but if it doesn't make you sneeze (or spread fluids in another way) it won't be infectious.