What Causes a Dead Mouse Smell in the Car?

[Duarte]

1. Reasons for a dead mouse smell in the car: When the car's air conditioning is set to external circulation, the air intake is not blocked. After parking, mice may enter through there and get trapped at the air filter. If the pipes are smooth, the mouse might not be able to get out and die there, causing a dead mouse smell when the air conditioning is turned on. If mice can move in and out freely and the car has been parked for a long time, there's also a possibility of mice nesting inside. 2. Solution: Remove and replace the air filter, thoroughly clean the pipes from the air intake to the filter, and perform a simple cleaning of the internal pipes. Then, it's a matter of time—allow one or two weeks for the smell to dissipate.