Having the origin be China is bad enough for the CCP but if it’s caused by some kind of accident sloppiness that can somehow be tied to lack of government regulations or something, they’re looking at serious domestic problems. Even if it did happen the CCP would never admit that and will seek to censor any claims to that effect.
That’s why both conspiracy theories about this being a man-made conspiracy of the USA/China stem from the populist camps (ie Trump and Xi).