When she took off her pants I felt such a terribly stinky smell

Don’t be rude to your friend.!! People are very sensitive about stuff like that and you might loose her as a friend. It could be a yeast infection she should go to the doctor and get it checked out. Please don’t listen to “Diamond Kicker” she probably doesn’t know what it is either and if you sympathize with her she’ll probably react better when you do confront her about it.

it sounds like she has an infection, anything yellow on her panties like a discharge ect is not healthy or less she is very sexually active.

she needs to make a appointment at her gynecolegist,If she doe’s not have one she needs to find one soon.

All I can say is that you should have asked right there and then, “what’s that smell?” and interrogated her about it…being that blunt may seem stingy to some people, but I think that between friends there shouldn’t be any holding back when one sees that something’s not right. You’re supposed to look out for each other, so telling her that smelling bad down there is just wrong wouldn’t be stingy at all, better you tell her than some other dude who may even ‘spread the word’ in your school or something of the sort. So always make sure, that when your friend does something, or when there’s something wrong with them you point it out, and encourage her to do the same towards you. That’s what I call “having each other’s backs”

she obviously doesnt bathe very well :P