Transmission of many viruses occurs by direct transmission during a close contact between two hosts, or by an indirect transmission through the environment, where biotic and abiotic factors may act independently or connected to assure survival of viruses released in the environment, and further direct or intermediary carrier (rats, cats, dogs, squirrels, dears, etc.) transmission back to humans. It is supposed that virioli as SARS-CoV-2 may have exceptional survival times in cold, clean, dark environments traveling short to very long distances, especially in the air or in water, “waiting” for a host to multiply.