RI does not just go away in a few days. It is the same as phenomena in humans and when a snake is dripping mucus from the lungs in people when that happens you are in the hospital. It will not get to that point and clear up all by its self. There are very very few bacteria that grow in the desert hot dry low humid conditions preserves things (think Egypt the oldest paper in existence is from egyptian tombs) Hot humid conditions grow bacteria fast think rainforest where a leather shoe will rot away in 2 or 3 months. There is no sense to dry conditions causing a bacterial fungal infection they simply do not live in large numbers under these conditions.