I don't mean this to come across as pompous just helpful information that I am glad was shared with me.
When baby or anyone else has a cold or congestion put pure eucalyptus essential oil on the bottoms of their feet (one to two drops) and some on their chest and back (diluted in coconut, olive or almond oil). My son recently had a cold and after doing this the congestion was MUCH better. It's all natural and doesn't have any chemicals such as Vicks or J&J (that uses known carcinogens in their baby products).
Also to help the body fight off the cold faster you can also rub one drop of oil of oregano on the bottoms of their feet.
Both are available at health food stores and relatively inexpensive. I have been doing this for myself for years but contacted my naturopathic paediatrician to make sure it's okay for babies and she confirmed it was. My sons cold only lasted two days.
If using on yourself just up the drops to about 3-4.
Hope this helps!