Cold and cough
usually means a viral infection in the nose, throat, mouth, ears, etc.
.. Cold viruses fly through the air, but they also are on the places that people touch, such as faucet handles, door knobs, phones, keyboards, railings, etc... If one does not breathe in the viruses, one can still catch them by touching the viruses and then transferring them to one's own eyes, nose, or mouth.