I was joking with a friend about how we should postpone our blood pact because he has a cold, and we realized neither of us really knows if that even makes medical sense. Could you realistically pass on a cold via an ill-timed super-swearsies? Are there any surprising or lesser known "totally can!" or "totally can't!" illnesses in that category? Interesting underlying blood mechanisms?
How likely am I to catch an upper-respiratory illness through strictly oral/gastrointestinal means (like sharing utensils, etc.)? [more inside]