[coogs]

Just started noticing an odd smell when the heater/ hot air blower is on. Partciually bad when the car is just heating up- but it's intermittent- started a few days ago. I first thought it was another drivers brakes bad air coming into the vehicle but have now determined it's blowing in periodically from presumably around the dash orginating from my car. Anyone know how I should proceed or suspect what it may be? Would really appreciaet the advice.