rattling in lungs sometimes when breathing in deep

I have a rattiling feeling in lungs when i sometimes breath in deep. I am 25 year old smoker i dont feel sick and have no cough or anything else going on.

[Dr Santos]

Hi,
How are you? Aside from the rattling feeling, what other symptoms are present? Pulmonary conditions such as acute bronchitis may present with rattling sensation of the chest. If this is caused by a viral infection, the symptoms usually go away after a few days. Drinking plenty of fluids, rest and getting enough sleep may help. However, if it persists, it is best that you have this checked by your doctor for proper evaluation. Take care and do keep us posted.