I had that this past summer and I agree with you the smell is embarrasing but I don't know if other people can smell it but you. Anyway, the doctor said it was an infection and he prescribed flagyl which is an antibiotic and it worked great.
Feminine washes can actually cause bacterial vaginosis. I agree, stop douching and go to the doctor.
I would stop using the feminine wash, especially if you have an infection. A lot of women are very sensitive down there and using feminine washes may only make the problem worse. See a doctor if it doesn't go away.
It could be bacterial vaginosis (BV) also known as gardnerella, which is very common and is distinguished by a noticeable smell. You'd need to be checked by your gyno for a definite diagnosis.