Profile For Dr. Who

Hello, I’ve been driving for a couple years and right now I’m doing 800ish mile layover runs where I go home afterwards. The run is through Arizona’s I40 mostly, and I end up sleeping in the early afternoon in Winslow, Flagstaff, etc. areas. Basically very hot and low humidity, idling with AC

Relatively recently, the last two weeks or so, the air quality in my sleeper (and only my sleeper, driving is fine all night and day) is unbearable. I’m not sure how to explain it but it makes breathing slightly painful (imagine taking a deep breath in extremely cold weather as your sinuses feel it), my throat and nose get very dry to the point of further irritation while breathing, nose often gets stuffy and I cannot sleep. I’ve been basically suffering the entirety of my sleeper birth time lately.

I’ve tried a lot of things. A small humidifer, which might be too small to rule out what I assumed was dry air, but it doesn’t help at all. I replaced the sleeper blower filter, the unit under the bunk. Washed all sheets etc. Dusted. Tried propping windows open, helps barely but the heat becomes unbearable

I don’t smell anything that would be indicative of an exhaust leak. I drive an 2019 International LT or something like that. Sorry this post is all over the place I’m half asleep, been basically sleeping 1 hour at most whenever in the truck, luckily I go right home when my 10 is up and can sleep normally. This really sucks, no help from company a d I wouldn’t know what to tell maintenance to look for if it were a truck issue

Is this possibly just an effect of summer heat and low humidity? It’s not allergies or sleep apnea for sure