Corona viruses in general can last for 2-3 days in some environments.
However, put it in the sun (UV light), or feed dry air, or oxygen into the mix, and it will die in a very small fraction of that.
The longer we wear mask, or worse, double up on the facial diapers, the easier it is to get sick from many types of bacteria, and even viruses in some cases.
About two months ago, in my mother’s church, I believe they had four people die from bacteria in their mask, *in one week!
Every year millions of children die on Halloween.