Sweet Smell ??

So recently and off and on my discharge will smell kind of...Sweet ? I don't know how to explain it, it's not really a foul smell, but it smells sweet. Sometimes it won't smell like anything sometime it'll smell bad and then other times it'll smell sweet. I'm currently ovulating if that has anything to do with it ? I'm confused on whats making it smell like that. Any ways to get rid of smell downstairs ? I know usually it smells like...genitals ? I don't know, it doesn't normally have a putrid or odd smell, just smells like a vagina. But I'm curious. Help ?