david g: Yes l have been 'spluttering & splattering' - but I've tried very hard not to do it 'all over the place'!
But the worst seems to be over now!

About a 1 minute or so

Not long, the common cold is mostly spread by contact or by someone coughing and sneezing near you.

Maybe it depends on the weather at the time ie (very warm or very cold).It is a bit of an imponderable l think. Hope you are not spluttering and splattering all over the place!!

http://healthieryou.com/cold.html

this link tells you all about the different ''types'' of cold and the smaller the particles the longer it lives in the air... hope this helps you