Mr. Sniffle, a 35-year-old male, is experiencing symptoms of a common cold including congestion, cough, and achy feeling. The most likely diagnosis is the common cold. You advise Mr. Sniffle that antibiotics are not needed and the best treatment is rest, fluids, and potentially an intranasal decongestant. Cough suppressants and expectorants may help symptoms but there is limited evidence for their effectiveness. Kissing is unlikely to transmit the virus.