Not particularly, I've noticed my lower half smells different while pregnant but not in a bad way just different. I'm perfectly healthy so I know it's normal. There was a short time I thought my pee smelled odd too, but it didn't last long or maybe I got used to it. I chalk it up to heightened sense of smell with pregnancy rather than a change of smell.
Thats what I was thinking. Maybe im just having a heightened sense of smell. I just though it was weird that im just now noticing a smell at 16 weeks. Thanks for the input! :)