I just caught the Fever Pitch episode of Mythbusters on repeat last night. Of particular interest is their testing of the myth (which they confirmed), that "Nasal secretions from a person with a cold can spread so far and so quickly that anyone in the vicinity can become contaminated." Unfortunately, their testing showed that it is far easier for an infected person to prevent the spread of infection, than for someone to avoid contamination from the infected person.
There are some short video segments from this episode available on line at:
Segments of particular interest to those of us that have low immunity are:
1) Fever Pitch Aftershow
Jamie Hyneman and Adam Savage reveal whether they get sick more often now that they're famous, and whether the results of this episode changed their behaviour at all.
2) Slow-Motion Sneezes
Watch Adam Savage and Jamie Hyneman's sneezes for science completely UNCUT, at 3,000 frames per second.
3) Flu Fiction MiniMyth
See how far Adam Savage's pseudo snot traveled over a single hour, and be very afraid the next time you're around a sick person.
4) Snot Meter
Jamie Hyneman experiments with ways to measure the distance of snot expelled by Adam Savage when he sneezes.
5) Snotty Savage Set-Up
Will a sick and snotty Adam Savage infect his fellow partygoers?
6) Sneezing for Science
Watch Adam Savage sneeze for science as he and Jamie Hyneman explore whether a sneeze can truly travel 100 mph.