I am not sure if i'm just being an overly concerned parent or not and need some opinions. 

My one fuzzie seems to be "coughing"? I'm not sure how concerned I should be? She seems to be coughing enough that I noticed..or maybe now I'm just listening for it? At any rate she just turned one year old last month. She seems to be in great health otherwise and is alert, active and eating as usual. All the poop I see in the litter box looks normal and brown. She did throw up food 4 days ago but hasn't thrown up again since.  

Also poor girl managed to singe her whiskers on a candle I had on my desk. I thought she couldn't get on my desk and I turned my back for one second...needless to say no more candles. I was wondering if this could be contributing to her coughing?   

I thought maybe it was dust so I just recently swept and swifter mopped the floor. I am also wondering if maybe my perfume is irritating her as well? Any thoughts? Could she have the flu??

Thank you!!!