Hello, No concern about this symptom. Smell could be due to mild indigestion of milk protein but will come round.
No need for daily poop also. She may comfortably go without one for a week too.
Upset stomach is indicated by vomiting and diarrhea. She may be uncomfortable due to air sucked in while feeding. Please latch her well, with good airtight fit of lips.
Also please burp her often during and after each feed.
Please change her sides while asleep and when cranky. May also be comforted on your shoulder.
Please record her weight also every week or fortnight.Hope she is gaining well.
Good luck to her.