If your child gets cold, the symptom continues for some 5 to 7 days, and the nose of your child may become airless. If the allergy causes jamming in addition to runny nose, few drops of the mucus get into the back throat and this is known as postnasal drip. As the baby could not split it out it might swallow it and cause vomiting as mucus may irritate the stomach and you may be worrying about what had happened to your child. You could have a talk with the doctor or pediatric allergist, and they take the case history and study the case thoroughly in order to find the reason for the allergy. Mostly, it might be due to environment pollutions like dust. 

She can feel better if you clean the nose by allowing drops of saline into her nose and get it moisture, you could also take the mucus out by making use of nasal aspirator. The child could feel better and her nose could be kept moisturized if humidifier or vaporizer is kept in the bedroom, this may also help the child to get out the mucus easily. The doctors may also give the prescription suggesting antihistamine like Zyrtec or Claritin fluid medicines and it will get rid of the allergic indications.
 
Wheezing does not mean there is asthma, it is the sound produced due to the narrowing of millions of small airways found in lungs, and if you blow the narrowed part sound may be produced like from that of flute. Already babies have very small airways and if it gets narrowed down due to cold or infections, breathing becomes difficult and the child starts wheezing. This is common for children and it does not mean the baby is suffering asthma. Albuterol helps the muscles to get relaxed and enhances the breathing of the child. 

However, the child has all the possibility of getting asthma depending on the family history regarding allergies or when your child has the symptoms of food or some other allergies like hives or eczema. For some the problem of wheezing might have happened once and it may not happen after, but if it continues regularly then your child is probable to have asthma. Moreover, asthma forms to be a chronic disease of respiratory organs, in which the airways of the person may get swelled and get filled with mucus if it happens to face triggers like dust, animal dander, mold and cold viruses. When the swollen airways get spasm baby starts coughing and gets wheezing and finds difficult to breathe.
 
Eczema appears to be a rough, red, itchy rash on the cheeks of infant. It may also appear at the backside of the knees and also in the corner of the arm. This may be due to allergies for some food, but the perpetrator might not be identified.