The full planning permission for the actual terminal is a seperate PP so this should not effect it at all, but I think you know the way the Councillors will vote on that!
As for astmah, Britain is known for having the highest rate` of this in Europe, with parts of Warwickshire suffering high levels, but that does not include Bagington. It is said that Rugby has a higher concentration possibly (though not proven) because of the Cement works (the same thing is said about Southam & Long Itchington.) But we are a country that suffers and cannot be blamed on a few new flights.