ICH can not live on pods. However the water could be infested.

Can fish get rid of ich on their own?

Therapeutics: saltwater fish have a number of natural defenses against ich, and if the fish are healthy enough and the outbreak mild enough, sometimes the fish may cure themselves, just as they would in nature. We can assist them to some degree by maintaining good water quality and providing a nourishing diet.

Can corals get ich?

A coral, snail, etc, cannot be infected with ich. However, they can carry ich cysts. I would NOT transfer ANYTHING from the ich-infested tank to another tank with fish until you do this. Remove all fish from the ich-infested tank to a quarantine tank to treat them.