If you lower the temperature of water to a cold temperature, moisture builds up on the outside. Now if we have a bottle, and another bottle with a gap in between the two, the water transfers, I believe there would be no sort of virus since it is slowed and they can’t move through a solid. We should still heat it up, then cool it for great water. That’s one way to transfer water because I saw it happen yesterday to me. Also, make sure the gap is closed on the outside, obviously