5th time this year, she has only just got over pneumonia

Just got back from doctors, been there for 2 hours. Got steriod medicine, antiobiotics and a pump for her
Does anyone else's LO keep having chest problems? She's 20 months I dont smoke, she has never been in a room where anyone has smoked ever
I have no pets no history of asthama in family I breastfed for 14 months blah blah
ooohhh im so annoyed, my cousin's brats are always in perfect health and she smokes in front of them and has from birth 