Yes crack can get in your system by the oils on it. But not with coke
As long as you wash your hands afterwards, you should be fine.
NO! You either have to sniff it, taste it or shoot it in your arm. My suggestion.....don't DO EITHER! Drugs are for losers!
When it gets into you pores or you inhail it ,yes.
It won't be in your system unless you put it in your body such as eating it, sniffing it and stuff like that but it shouldn't be in your system if you just touch it