Awful smell from ventilation ducts

[RickDangerous]

Hi!

I have my ZR-1 and couldn't be happier and prouder but there has been an issue lately. When I accelerate and keep the speed up for a constant period of time there is strange smell coming from the vents. Apologies but it smells like wet farts. I looked under the hood, checked on liquids but everything seems fine.
It happens just when I keep a constant speed and it is really annoying. Also driving around 90mh with windows rolled down is somewhat uncomfortable.

Do you have any ideas what can it be?




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[daniels]

Could be a dead animal. Not unlikely if the car has sat a lot

[Flyman 27]

My guess would either a dead mouse somewhere or a mouse nest that warms up & you are smelling all the mouse urine. It does smell real bad.

[Paul Workman]

x3 on dead critter (mouse most likely). Eventually, it will dry out and quit smelling. But, that could take a month or two (experience speaks).

However, when I bought my truck, the previous owner was a heavy smoker. I Google'd and found an active aerosol bomb where I set it off with the heater running and closed the doors and windows for ~ 20 minutes. It worked pretty well.

I bought the thing on-line for about $15 shipped. Wish I'd kept the empty container to share with you on what it was.

To be honest, unless it was a daily driver, most of the worst of it should go away in a couple weeks - a month or two tops. So, maybe you can wait it out??

Good luck!

[Bradjon]

You might try ozium it?s sold at Walmart .it was developed to take the smell away from dead bodies

[32valvesftw]

I had a car with a bad catalytic converter that resulted in "rotten egg" smell in the car.

[A26B]

Humidity will condense on the exchanger & drain through a pipe onto the ground. Almost always visible after stopping for a bit. If you do not see a puddle near the firewall on the passenger side, then condensation may be accumulating in the air box. it will smell very musty. The drain pipe is usually a rubber pipe and somewhat flattened on the end.

[Young1]

Knowing the propensity of critters taking residence in the starter valley, could some have died in there and the smell get into the car? Also a clogged valley drain could make a moldy mess of their past domiciles. Of course I guess you would smell that all under the hood. Put your nose at the plenum for a sniff test?

[billschroeder5842]

Humidity will condense on the exchange & drain through a pipe onto the ground. Almost always visible after stopping for a bit. If you do not see a puddle near the firewall on the passenger side, then condensation may be accumulating in the air box. it will smell very musty. The drain pipe is usually a rubber and somewhat flattened on the end.

This would be my bet as well.