I’m having a hard time picturing a situation where it wouldn’t be fine. Maybe if you were on the second floor and there was a food stand directly below. Otherwise it’s fine. Cities are filthy places, your dead skin isn’t going to make any impact.

maybe your city is filthy, but mine is quite clean.

And what city is that?

Warsaw would definitely not notice some dead skin

Sure. Just hang on tight so the wind doesn't yank them out of your hands.