Weird odour when I change diaper

Hi guys im a ftm and my daughter is a month and a half so before I noticed she used to have like some discharge that was greenish kinda and it did have a weird odour and now everytime i change her diaper i dont see discharge but there a weird odour from her vagina idk if thats normal or not or if i should just wait till her next appointment but shes been like that since she was born