<prompt> Whiff test is positive in:CandidiansChlamydial infectionTrichomonas vaginitisHSV infection  <response>: Ans. is c, i.e. Trichomonas infectionRef: Williams Gynae 3rded, p52 Whiff Test:Vaginal discharge 10 KOH gives a Fishy odour.This test is characteristic of BV with vaginal pH 4.5 and this stems from diminished acid production by bacteria.Similarly Trichomonas vaginals infection is also associated with anaerobic overgrowth resultant elaborated lamines.Thus women diagnosed with bacterial vaginosis should have no microscopic evidence of trichomoniasis 