The aerosol effect: what you don’t see can be harmful 

When we flush the toilet, especially with the lid open, the water doesn’t just flow down… it also sprays. This phenomenon is called the aerosol effect, and it refers to the thousands of droplets that disperse into the air after flushing. 

The problem?

These microdroplets can contain traces of urine, bacteria, and other microorganisms that lodge on nearby surfaces, such as:

Toothbrushes 

Face towels 

Cosmetics or personal hygiene products 

Cell phones or other items often left in the bathroom 

Although many people don’t notice it, this invisible spray can increase the risk of exposure to bacteria like E. coli, especially in small, poorly ventilated bathrooms. Therefore, a basic hygiene measure is to always close the lid before flushing the toilet. 

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