On the taste topic, I believe that the zombies work on threat detection. Zombies attack you until you are not a threat, (down) and then move on to the next threat. In the MOTD intro scene when Salvador and Billy ran down the hall, Billy was over run but Sal made it past a gate. The zombies began to eat Billy because Sal did not attack and was not a threat. As for the monkey bombs, when in turned when a human throws a bomb, the zombie is fooled into thinking it is a human target, thus running into it and KABOOM.
