If you can find the dead animal yourself, carefully remove it using gloves. The CDC recommends soaking the carcass in a disinfectant solution of 1 part bleach to 10 parts water for five minutes before double-packing it in sealable plastic bags and disposing of it in a garbage can that's emptied regularly.
Chlorine dioxide, like Dead Scent odor eliminator, is considered the best way to rid dead rodent odors in a car due to its exceptional odor-neutralizing properties. This powerful gas penetrates deeply into the car's interior, effectively breaking down the organic compounds responsible for the foul smell.
Sometimes, you will be unable to locate the dead rodent. In these cases, it will be necessary to find a way to remove as much of the odor as possible until the rodent decomposes and stops smelling. This usually takes several weeks, although the smell will lessen gradually over that time.
Smell Of Decay
Most likely, a rodent or other animal has died after entering the engine compartment or the HVAC system. The problem is more common if your vehicle is rarely used.
Cars are full of hard-to-reach spots, so make sure you give yours a full search. Check under seats and floor mats, in seatback pockets and door compartments, and anywhere the foul-smelling culprit could be hiding. Don't forget places like your glove compartment, too.
The exact source of the smell may be hard to pinpoint because the stench has a way of spreading everywhere in the vicinity (and seeping into the fibers of your very being). Also, you might have to cut a hole in the wall just to get to the carcass. If you can wait it out, the odor will eventually go away.
It's not uncommon for poisoned mice to die in hidden crevices within walls, ceilings, and floorboards. If you don't come face to face with the carcass, the odor trail should lead you to the problem area.
White Vinegar
Like baking soda, vinegar is a common pantry item that's great at absorbing odors. Just fill a bowl or jar halfway and leave it your vehicle for a few hours. Goodbye rotten food smell.
Mold and bacteria can form inside the A/C system and release unwanted odors. Failure to change the cabin filter regularly can also result in the same issue. It's also possible that the condensate drain line is clogged with debris.
White vinegar is also another option of removing dead mouse smells in your car. You would need to mix equal parts of vinegar and water in a spray bottle and spray the contaminated area and let it sit for a couple hours until dry, making sure there's a good ventilation system in place. Repeat the process if necessary.
The culprit: mold.
The air that passes through the evaporator and the units' mold build-up will carry the foul smell inside of your car through your dash vents. Mold is the most common culprit for causing raunchy smells to come out of your cars' AC.
With a dead battery, having a set of jumper cables and a nearby motorist willing to help may be enough to get your car started again. Check on an older car battery as soon as possible afterward, though. Auto repair shops and most auto parts stores should be able to test the battery life on the spot, often for free.
The strong scent of peppermint is overwhelming to mice. Similarly, essential oils such as eucalyptus oil, bergamot oil, clove oil, and cinnamon oil are potent in keeping mice at bay. One study noted that eucalyptus oil applied once a day was more effective as a rat repellant than once a week.
Unfortunately, when a vehicle sits idle for too long it can become a cozy place for mice and other pests to take residence. Even if you leave your car's doors closed and windows rolled up, there are plenty of ways for a mouse to get inside.
When they feel threatened, mice play dead until all danger has passed.
It's dead. But the decomposing process of the carcass is still a threat to your health, as it activates all sorts of harmful, airborne agents and pathogenic bacteria, which can easily find their way into your lungs and digestive system, or to your skin.
It may take days or weeks for the carcass to dry out and the odor to naturally and completely disappear.
The combustion of your car's engine can produce sulfur dioxide, which drivers report as a horrible, strong rotten egg smell. When your catalytic converter is failing or stolen, it cannot filter these emissions—allowing the pungent sulfur dioxide smell to carry through your exhaust.
Baking soda and charcoal are both great natural odor absorbers. Sprinkle a thin layer of baking soda on the floor mats, car seats, and other fabric surfaces (avoid leather upholstery and anything else easily damaged by baking soda). Let it sit for at least 15 minutes before vacuuming.