a conspiracy theory...no one knows for sure how the pathogen originated and at this time the "Lab Leak Theory" is just that...a theory, among others. No respected scientist would make such an assertion.
btw, those were the words of others...I just cut and pasted them...but I do agree with them.
Sadly, M. Montagnier had his 15 minutes of fame, but he ended up a "pariah" for many reasons...this is but one of them....check out his theories regarding "water".