How virus got from animals to humans is still not fully confirmed. First suspects, bats, have the virus which is in 95% similar to SARS-CoV-2 and pangolin, another animal, has the virus resemblance of around 98%. The transmission could have taken place in Wuhan Seafood Market, where a lot of exotic animals are kept alive in close proximity to each other.
There’s a number of rumors about the origin of the coronavirus circulating on the internet. One speculates that the virus escaped from a Wuhan Laboratory conducting biological research on bats. Another claims the virus was stolen from Canada and genetically enhanced as bioweapon, before accidental leak or purposeful release. Both scenarios lack evidence and are proclaimed conspiracy theories.