I believe that Naturopathy is an alternative method for common illnesses at least. So there could be hundred reasons to adopt either allopathy or naturopathy.
Since I strongly believe in naturopathy, I always welcome kids having cough and cold to come over my house and play with my kids. And yes it always happens that every time they play with such kids develop the symptom of cold and cough. But since I am stick to let them recover naturally so body have also learned to fight such viruses.They are fine in a day or two. But yes I take extra care in these days of my kids for their fluid intake or rest etc.