I have some silicon ballet flats that look lovely but they make farty noises too. They are fine until my feet get warm. I wear them around the house sometimes, they are too beautiful to throw out.
I used to wear a leather skirt suit to work. Went to a meeting with leather chairs and as I plonked myself down it make a huge farty noise in the quiet room as leather met leather. I was the only female and I could see the men trying not to laugh and make a big deal out of it, but I wanted to laugh too and had to hold it in...