"question re air quality in the glass tunnel ."

During my visit I was directed from the main building to go to Audiology via the glass tunnel. I found this to be an uncomfortable experience owing to the heat of the sun but I arrived for my appointment feeling well and in good humour. However later in the day I suddenly felt very fatigued and took to my bed where I slept for 12hours , waking up with symptoms of a heavy cold. I strongly feel that the humid atmosphere in the tunnel ( ripe for breeding germs ) was the cause of my affliction and I would be interested to be informed of what procedures are in place to check the air quality in this particular location.