I have no advice for you so I’m sorry but to make you feel better I did a VI for Simmons WVS a few months back and farted whilst talking (quite loud).…. I tried to continue but started to laugh😭 I didn’t have time to say sorry. I don’t think grad rec found it funny as I was unsurprisingly unsuccessful! Got invite to apply again through 10K interns did my VI a few weeks ago and I think it went much smoother but its Never a PFO until they tell you😁 good luck!