chances of them surviving the process is zero, same with explosives. If you have to ask you are most likely to kill yourself in the process or achieve something harmless.

Think of it that way. The hard part for nuclear device is enriching thr uranium. If you have it a chimp could build the bomb.

I’d argue that with explosives it’s significantly above zero.

But with bioweapons, yeah, that should be a solid zero. The ones actually doing it off an AI prompt aren't going to have access to a BSL-3 lab (or more importantly, probably know nothing about cross-contamination), and just about everyone who has access to a BSL-3 lab, should already have all the theoretical knowledge they would need for it.