Hi! My 6 mth old LO is bursting into sporadic coughs (without phlegm) and she is not having a flu. Doesn't seem to be a viral infection too. May i know what's the reason?

You LO may be having a dry cough. It could be caused by dry air. Does it happen more frequently at night? If it does, try putting a bowl of water in the room to add some humidity. Besides that, It could also be caused by teething as the excess saliva escapes through the back door, dripping down baby's throat, causing gagging and an irritating cough.