Hi, My daughter is 3 yrs 5 months old. she had adenoitis when she was 3 and was treated with anibiotics. However, since then, she is constantly having blocked nose, cough which at times is dry and other times productive. She was again suffering from blocked nose and snoring for the last 3 days so I gave her flomist spray. one puff in each nostril last night, which really helped to relieve the nose. For how many days can I give her the spray? Also is it safe?