What happened to the smell of smoke in the wind tunnel after the old Bora caught fire?

The reason for the smoke at the wind crossing is:

1 ? The hot air tank leaks antifreeze.

2 ? The lower outlet pipe of evaporator is blocked.

solution

1 ? Replace the heater water tank.

2 ? Dredge the evaporator outlet

Odor cause

1 ? Air conditioning filtration

2 The air duct is too dirty

solution

1 Replace the air conditioner filter.

2 use air conditioning cleaning agent to clean the air duct.