These smells are usually due to dirt, dust and debris buildup in the under-hood air intake vent, trapping water and moisture on the AC evaporator and in the evaporator case. All kinds of nasty gunk (germs, mold, mildew) can fester and grow in that wet, trapped debris.
As your vehicle ages, bacteria can grow in the system where moisture typically collects — particularly on the A/C’s evaporator. When this happens, a pungent, mildew-like smell can get blasted into your cabin through your A/C vents.
Combine 1/4 cup white vinegar with 2 cups water in a plastic spray bottle and shake vigorously. Spray the solution very lightly into the air duct. Don’t saturate the surface or allow any of the solution to drip down into the air duct. Allow the sprayed solution to dry.
Mix vinegar and lemon juice and swab that onto the battery and/or spill with a cotton swab, which will neutralize the acid. A toothbrush can also be used to clean the spill if dealing with delicate internal workings of an electronic device. Paper towels may also be effective in some situations.
Apply isopropyl alcohol. Isopropyl alcohol provides a one-two punch for cleaning electronics. It removes residue from other cleaning agents (in this case, lemon juice or white vinegar) that can gum up your electronics, without leaving behind any additional moisture. It’s safe and effective, and it dries quickly.
Submerge and bathe the battery terminals with the prepared vinegar. Let them sit for a while before wiping them down with spritzes of water. Let them air dry completely before reattaching the cables into the battery.
All you need is a glass of water and a teaspoon of baking soda to prepare the solution. Then use an old toothbrush or bristled brush to scrub said solution on the corroded areas. Cover the battery terminals and other corroded areas with a coat of baking soda.
Dealing with battery acid spills and old batteries can be hazardous. So the process of how to clean up battery acid spills must be undergone with protection and caution. If battery acid accidentally gets in contact with your skin and starts to burn, rinse the affected area using lukewarm water for at least 30 minutes.
The acid in Coke will neutralize the corrosion on the battery and cables. When the Coke has finished bubbling, take a wire brush and brush away any corrosion that is stuck around bolts or any other hard to reach areas.
Will baking soda and vinegar clean battery corrosion? Yes, in fact, this power couple is one of the best ways to banish battery corrosion for good. Baking soda neutralizes the battery acid, and a little vinegar (or lemon juice) reacts with the baking soda to break it down.