Trying on shoes has never worried me overmuch, tho’ I always use pop sox in the interests of hygiene.
I have to say, tho, that the foot hygiene of the public at large leaves a lot to be desired.
I used to be in charge of a small minor injuries clinic, and naturally saw lots of sprained ankles, sore toes and what have you in the course of each day.
I was astounded at the generally grotty state of people’s feet - long black toenails, smelly, filthy socks, horribly crusty heels with ingrained dirt - I’m not talking about the general grubbiness you might pick up in a day or two, but real neglect.
I’m sure though, that not a single G’netter would set out of their door without sweet and fragrant tootsies!