Though Hartsfield-Jackson Atlanta International Airport ranks first in the number of flights, it was eighth on the researchers' list of potential disease spreaders.

CNN: Researchers list top 10 airports for spreading disease

And infants and children are the biggest spreaders of colds.

BBC: Image of a boy sneezing

But while his father did contract work for fell farmers round Hesket Newmarket in Cumbria with lime-spreaders and threshing machines, Edward, at 14, was on a JCB planting signs on the new M6.

ECONOMIST: Edward Stobart