bapu
I have NEUTRINO installed on my hard drive.
...and passing through your body sometimes nearly at the speed of light.
This is the primary source of flatulence, contrary to popular scientific and medical "opinion".
So next time you pass wind in public at an inapropriate moment simply say "Sorry. I was merely releasing trapped neutrinos so the cosmic dance of the universe can continue unimpeded".
Then casually and knowingly sip your cocktail and let the awe of your superior intelligence from your peers wash over you.