Zombie Drabble #29

It was without question the worst odor he had ever experienced; his midsection ached from the retching. Above him through the sheet metal ductwork he could still faintly hear the scratching and moaning. Of course they were gathered around the air vents, they could likewise smell him. It unfortunately meant that his breathing air passed around and through dozens of rotting but inexplicably animated corpses before reaching his nostrils. The old fallout shelter was virtually impenetrable, they would never get in, not in a million years. But how much longer could he stand the constant stench of rapidly decomposing zombies?