Just remember wearing a pp3/resp may protect you a bit but unless you decontaminate yourself you will be driving home with all that shite over your clothing and will probably end up breathing it in
But yer........basically you can’t.......if you’re wearing a pp3 because you’re worried about asbestos it’s a bit pointless.............people working with the stuff dump disposable overalls into harazdous waste bags,shower cubicles with filters etc etc.
Pp3 may help with some stuff like bird crap and general dust etc but that’s about it