Plumbing Questions? Ask a Plumber and Get Answers ASAP.
I can only speculate the cause, but I would guess there was a water main break in your area and you are smelling the results of chemicals used in the repair.
As to why you can smell it more in the ice, is because the ice sits in an enclosed space longer so the smell concentrates. If you have concerns, take a water sample to your local water treatement facility
A charcoal filter would remove that smell.