Whenever I take out a mcdonald's big mac, or chicken burger, I always
without fail, feel as if my chest is congested, and end up producing
excess mucus, hence I have avoided big macs and fast food, but
recently I was in a hurry and only place to grab some food was at sub
way, I had a chicken sandwich with radishes, onions, and basically all
on the menu

A day later I felt the congestion in my chest, and excess mucus
production, which I have been coughing out, which lately has become
yellowish/green and thick.

I do have mild asthma, and I am wondering if there is anyone who might
have similar allergies to fast food, or is this a particular allergy
to radihses/onions?