If you've ever wished that a buddy could smell your farts, and provide you with an analysis on your gut bacteria . . . well, technology is about to become your best friend.

Scientists have developed "smart underwear" . . . or a wearable sensor that can clip onto your underwear, and monitor gut bacteria activity . . . by "measuring the hydrogen gas in your flatulence."

And it can even do this on-the-go!  A battery charge can last up to a week.

Researchers say the device detects dietary changes with 95% accuracy, and it has revealed that the average person passes gas 32 times daily . . . far more than the 10 to 20 times people typically self-report.

There's a lot of variance, though.  In their studies, on any given day, a person might fart as little as four times, while others can pass gas up to 60 TIMES in one da