hello. Welcome to HCM.
Your complaints indicate more a component of allergy
than common cold
. It would be helpful if you can go in for testing for Allergy Panel which is routinely available in most standard labs. based on results of these, you can avid these food substances in future.
As a second step, it is possible for even adults to have hyperreactive adenoids, which will catech infection easily. So you need to go in for check up by a ENT specialist