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Bacteria, not sweat, often cause shoe odor
Each summer and after workouts, many people complain about unpleasant shoe odors. While most assume sweat is to blame, it’s usually bacterial growth—more than the sweat itself—that produces the smell.
When sweat and dead skin cells remain inside a shoe, bacteria feed on them and release foul-smelling compounds. Poorly ventilated sneakers and work shoes tend to trap moisture and worsen odors. For that reason, washing alone often doesn’t fully eliminate the problem.

Rubbing alcohol can help control bacteria inside shoes
Many people reach for rubbing alcohol (ethanol) first to cut down on shoe odor. Rubbing alcohol is a common household disinfectant. Spraying it lightly inside the shoe can reduce the bacteria responsible for the smell.
Focus the spray around the insole and where the foot contacts the shoe. This simple step can make the interior more hygienic and is a frequent tip in lifestyle columns.

Baking soda absorbs odors
A common follow-up is to add about a teaspoon of baking soda to the shoe after applying rubbing alcohol. Baking soda is a ubiquitous household cleaner known for its ability to absorb odors.
It soaks up residual moisture and odor-causing compounds inside the shoe, which is why people often use it as a deodorizer. That’s also why baking soda is popular for refrigerators and shoe closets.

Leaving it overnight boosts odor removal
Baking soda doesn’t act instantly; it requires time to absorb smells and moisture. Many people put it in their shoes before bed and shake it out the next morning.
Wiping the interior afterward with a dry cloth or a disinfecting wipe leaves the shoes cleaner. This routine is especially handy for people who wear sneakers often.

Manage bacteria and moisture together
To reduce shoe odor, don’t just mask the scent—address the root causes. Cut down the damp environments where bacteria thrive and keep the interior dry.
People often pair rubbing alcohol to control bacteria with baking soda to absorb moisture and odors. That combination has become a frequent recommendation in lifestyle content.

Real-life example in Korea
A Korean lifestyle show once demonstrated using rubbing alcohol and baking soda to help a commuter with smelly sneakers. The segment showed spraying the inside of the shoes with rubbing alcohol, adding baking soda, and leaving them overnight, which drew viewers’ interest.
Online forums later offered feedback such as The sneaker smell definitely decreased, I use it to deodorize my entire shoe cabinet, and It’s easier than expensive deodorizers. Each summer the tip resurfaces as a go-to household fix.











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