Cat hissing at my newborn

Rebecca✨ • 29,FTM to my 2 year old daughter && coffee-obsessed!

My cat has been sniffing my daughter’s things and then hissing & also hissing when my daughter moves while she is sniffing her hair. Other than that no “aggressive” behavior. Just wondering if this is the cat getting used to my daughter being in the house? My hubby brought home my daughters hat from the hospital so our cat could get used to the smell