Baby poop smell

All these articles I read say since my baby is breastfed her poop shouldn’t smell/ could smell sweet. They’ve never really smelled before but I went back to work a week ago and I pump bottles for her for the days I’m at work.. but anyways ever since about a week ago her poops definitely smell! They still look the same but I can’t tell if they smell sweet- no type of poop smells sweet to me lol! Anyone else experience this?