What about in general though? How should your vagina smell most of the time? Like your stomach and your mouth, your vagina is home to billions of bacteria. The bacteria to which Dr. Mendes Soares refers are called the vaginal flora, or vaginal microbiota. The vaginal flora work to keep your vagina's pH at 4.5, or slightly acidic. It's likely that your vagina has a slightly sour smell. There will also most likely be a slight musty smell, from sweat that builds up in the nooks and crannies of the human body. Neither of these smells should be overpowering. In a blog post on WebMD, Dr. Heather Rupe says that you should be able to smell a vagina from one foot (about 35 centimeter) away and that's totally normal. Handy to know!