I thought it was diabetes they cured. 🥴

Weird as it sounds, the essential oils will actually work here if concentrated enough. I know some who works in an OR and there's a bottle of peppermint oil stashed for extremely odorous cases. The mint basically overpowers pretty much anything else (like, for example, human fecal matter or necrotic tissue). You'll hate the smell of mint for a day or so afterwards but it beats the alternative.