Rotten is a general term, but if it is rotten because of a fungus (such as moldy bread), then yes it does contaminate other food.
worms eat rotten food
They eat rotten food.
oxygen
Gregor is an insect, and therefore is able to consume spoiled or rotten food with no ill effect.
To see the rotten food.
salt
rotten food
Banna
Yes
rotten
A furry rotten potato