This is quite odd and I can't really explain it myself but maybe one of you has heard of something similar!
Had an infection (coughing up green phlegm, green mucus from nose etc) which GP gave antibiotics for.
Finished antibiotics, nose still a bit stuffy (but mucus is now clear) and the cough is still there a bit (much less green mucus, whiter now), but usually only for about an hour after eating and then it's gone 
.
The cough is the chesty, breathing in you can hear the mucus in the chest and then after about an hour it totally disappears .
I've done some research online and it could be to do with insulin production after big meals? Meal portions are the same as before though so this seems unlikely?
Any suggestions??!