I travel a lot for my current occupation, which means I also use a lot of rental car companies in every town that I travel in plus out of. I don’t usually encounter too much of a problem. My greatest pet peeve would have to be when I clearly ask for a specific non-smoking vehicle as I have a terrible asthma issue with smoke plus it is even more obvious that either someone violated their rules or they simply ignored my request with regard to the vehicle. I usually find this out often when it is too late plus I have already been on the road for a long while plus obviously I have no time to turn back in order to make my meeting on time. It will happen with one swift click of the a/c or heating device in the car plus blasting through the air filters is that awful hint of that annoying smoke that just irritates the senses plus seeps in my company clothes. It make myself as well as a number of others so furious that they cannot at least have the courtesy to check the air filters plus have their vehicles’ cooling plus furnaces always inspected. After all they are asking so much money of us to go ahead and rent their cars bi-weekly, the least they could do is schedule a familiar HVAC repair provider that could come in plus upgrade out the filters on a familiar basis. The air filters are where the real complications lie. I know I have a lawsuit if I truly and honestly want to do something about it, since it states clearly in my contract that I have a rather serious sensitivity to smoke plus it was recommended that I also receive a non-smoking car for my company use.