Hi Teena! Cody had an upper resiratory infection already. My vet said they do not get colds from humans or visa versa, but catch them from other dogs, ie: sniffing stuff, playing... Since Cody LOVES the cold weather and snow I asked if he could get a cold that way and he said no. His nose gets runny just like mine does and he'll sneeze from burying his head in the snow and swallowing it...k