Why start worrying? What good will that do?
Unless you plan to get cozy with a person with ACTIVE symptoms you won't catch it just even by being near them (thus the reason "Clipboard guy" was in no danger). The people whom are at risk of actually catching it are people who will get in close contact with a person who has the virus, aka Doctors / Nurses / Undertakers, and if you happen to live in a tribal area in Africa which does not trust / have access to western medicine, any friend / family member whom is looking after an infected person themselves without knowing the danger.
Not according to the Dr's I've heard from, however according to someone who is in the know, it can't easily happen, and his comment on the "advice" as given by some of the other Dr's out there was pretty direct