From Igor Carron’s blog, which is usually about compressive sensing:
Since mid-December, I have lost about nineteen pounds (8.5 kg) by following some of the results of the self-experimentation of Seth Roberts, a professor at Berkeley . . . What did it take to do this ? For me, just one thing: a $4 nose clip that I put on my nose every time I eat. That’s it. No exercise. I eat what I usually eat although now in a rather lower amount (not because I am starving myself but because I feel full earlier). The weight loss was pretty steep at the beginning. Putting a nose clip has some social cost though and when I eat out with friends or through the Christmas food, I lose it. . . . I can now see abs that I had not seen for the past twenty years.
Could you instead swab your nose with something that interferes with our sense of smell? Like Vicks or Mentholatum?