[palmer]

A nice moist warmer than air environment is just a great place for the virus to relax with a few of his friends. If it were cold n dry, they would be on impotent.

Viruses degrade with warmth and moisture, the colder and drier the air is, the less they degrade.

[jonrick46]

"Viruses degrade with warmth and moisture."

The virus degrades after the droplet of moisture that encapsulates the virus evaporates due to temperatures and humidity. The higher the temperature, the faster the evaporation. The lower the humidity, the faster the evaporation.