Not sure why I googled it but this is lore:Almost died to day on gringotts!!
Someone Farted in the elevator we were hopeless. Couldn't do a thing!
Fresh Air Refreshes Totally (F.A.R.T.) was a fringe movement of wizards who preferred to wear robes at all times in public, even when in the vicinity of Muggles, because they believed that trousers "stemmed the magical flow at source" and that having a "healthy breeze" around one's "privates" was desirable.