Israel’s Beck Medical has developed NozNoz – a silicon nasal insert that curbs the appetite by blocking the senses of smell and taste. The effect is to prevent stimulating the body’s olfactory bulb that controls hunger and food preferences. NozNoz is comparable to contact lenses for the nose.
https://www.israel21c.org/the-contact-lenses-for-the-nose-that-might-help-you-lose-weight/