More bad news for preventing coronavirus infections...

[ProfessorGAC]

11. It Does Neither

Cold doesn't denature viruses, unless we're talking around absolute zero.. And, only then because they become friable.
Putting your money in the freezer does nothing but give you somecold cash!
Studies have shown the virus is far more viable on hard surfaces than on soft, fibrous surfaces. (Like paper money)
You could safely spray the cash with Lysol or a cut spray like Bactine. Won't ruin the bill and will dry in 10 minutes or so.
If you're in a hot climate, just lay the money in the sunshine. The heat and uV will do a number on the viruses on it. The virus fully denatures at 135 °F in 15 minutes.
Wouldn't work here, because we're getting angled sun & only high 60s here.
But, you don't accomplish much by freezing the money. In fact, surface chemistry suggests it's less safe as the mechanical release of the virus when thing get colder and less elastic, which the paper, moisture, & and mucous droplets all do.