If anyone please has an opinion -- Cold air blows from all the vents front / rear but strangely Hot air blows from under the rear seats as if it has heated rear seats and from the hole the seat belts get attached to --no issues on the front seats , you only feel it hot in the rear seats and at times smoke comes from under the rear seats too

 

Sounds like you may have an exhaust leak, when the smoke comes from seats does it have an odor? Also does the smoking happen when the car has been running for a long period of time?

 

yes it does have an odor and yes after running for a long time and if stopped and then start again the smoke comes at times Thank you so very much for your kind help , will get that checked and now have another issue --check vsc on dash with a slippery car light w check engine light and a light with in a circle in center an exclamation sign any thoughts--searched on google an opinion was bad gas cap should replace ---but ran a scanner and it gives a code for abs wheel sensor and a code for catalytic system bank 2 below threshold for a predetermined period of time --oh boy all at the same time --if it rains it pours --seems like some expensive repairs