Do you often get that annoying feeling of mucus dripping from your nose onto your throat? While this may be a common symptom ...

air hardens the mucus into a solid booger, a gooey prison cell for your ensnared enemies. Now, normally, you can get rid of that bacteria-ridden ball either when you sneeze or blow your nose.

Reindeer suffer with symptoms similar to a cold, such as coughing and spluttering - and maybe even that legendary red nose. The cause is not a common cold, however, but an infestation of fly larvae.

They did find one study which suggested that nose-picking could spread bacteria in a harmful manner. Another said that eating snot could stop bacteria from sticking to teeth, so it might be good ...