There is no easy way, she likely will get offended. If you have access to it, you can ask her to join you in the shower and then wash each other, literally everywhere too. She could also have an infection which would cause an odor. Taking a shower together is a lot of fun and you will know she is clean. Everyone should bathe before any sexual activity takes place unfortunately a lot of young people don't.

Sisophous, shut up! Just shut up....

there r alot of things that can make a chik smell kinda funky, other tan being dirty or having an infection. A lot of women can't eat any kind of fish or seafood w/o smelling like fish "down south" in a day or so. this is just the way the oils in the fish come out thru pores or what not. i don't eat tuna even unless im on the rag. with some girls onions or garlic can do the same but i got lucky there. it may not be hygiene but diet- don't count her out as skanky yet!