Ann: BTX 1801 Phase 2a Antimicrobial Study Underway, page-54

With this trial been a double blind trial as a SH or not, I doubt one would be able to influence any sort of result for this specific trial anyway.. acne or similar a change of diet as an example one could possibly sway results, but for a common nasal bacteria and without knowing if it is there or not.. i doubt it..but stranger things have happened..

A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results. Double-blind studies are particularly useful for preventing bias due to demand characteristics or the placebo effect.