Hmm. I wonder! It depends on whom. I can certainly think of a number of people who seem more willing to kill than others... that being said, it seems that we can, indeed, die again, which is a problem.

If it's someone who is trying to pick off the competition, rather than it being merely an accident, then all-together in the same room where we can't retain consciousness is probably not a good idea.

No, only with someone you trust, and in a secure place, I think.