I don’t know what is wrong with my vagina

hello, i got tested for STI's this month and my results came back negative. All i had was thrush, but since i treated the thrush my vagina has a strong odour that smells like onion. i have tried everything and nothing will get rid of the smell. I have no other symptoms just a strong odour. if anyone has experienced this or knows what it is may you please help me.

if you are eating onions then thats why. I know when I eat onions I smell like it down there for a few days.

Maybe some yeast infection

do you eat alot of onions? this can make your discharge smell like that. it could also be that your vaginal PH is off. since all of your std testing came back negative i doubt its anything serious.