You're asking people to prove a negative and then you're upset when they can't? It's impossible to disprove but both SARS and Bird Flu crossed over from animal

You're asking people to prove a negative and then you're upset when they can't? It's impossible to disprove but both SARS and Bird Flu crossed over from animals in Southern China so there's no reason it must have come from the lab, either. Right now we have zero evidence either way, just people speculating mostly based on their pre-existing opinions of the Chinese state.