the answer is warm soda.
It will taste warm if you don't mind warm soda then it won't be nasty but if you dislike it, it will be nasty.
Soda can give you problems over a long period of time, but not kill you.
soda would kill the plant because of the caffeine in the soda
No expired soda cannot kill you. Unless you are allergic to flat pop XD.
soda loses its carbonation in a warm area
It goes flat faster if it is warm because it has lost a lot more of the fizzy air than the cold soda.