Source of Covid 19

The Covid 19 epidemic is widely thought to have originated in Wuhan, China as a consequence of the practice of dissection of bats and pangolin for food. The virus was able to make the animal-human jump through mutation.
But what if it wasn't? Could it be that Covid 19 is an example of 'panspermia', the transmission of living matter through outer space. In the middle of August 2019, as every year we passed through a shower of extra-terrestrial material known as the 'Perseids'. It is known that viruses can survive outer space when protected from fatal star radiation (rays) by cosmic dust or rocks. As the earth passes through this shower of dust, water and rocks could the viruses 'float' down to earth and become subject to the prevailing winds and weather, carrying it towards eventual landfall.
From the middle of August there is ample time for the viruses to reach earth in December when the first signs of the outbreak emerge. As the planet rotates, so more zones become infected with first  Asia, then the middle east, Europe, the Americas and finally the Pacific islands.
If the planet passes through this cloud of fragmenting material every year why haven't we come across Covid 19 before?  Good question but perhaps the previous mutations were unharmful. and we were lucky in the same way the earth is fortunate to have avoided major asteroid bombardment. But one day we may not be so lucky.
Remember Horace: 'Carpe Diem quam minimum credula postero'. Seize the day and don't put your trust in the future.