Health studies warn of toilet aerosols and rare skin infections

Health researchers and institutions are highlighting various biological risks and infections. A study by Flinders University, published in ‘Science of the Total Environment’, warns that flushing toilets creates turbulence that releases fine droplets and bioaerosols into the air. These particles can remain suspended in the breathing zone for at least 20 seconds and may transport pathogens such as influenza viruses or Legionella.

Separately, the Robert Koch Institute (RKI) has reported rare cases of dermatophilosis, also known as ‘rain rot’, in humans. This bacterial skin infection, caused by Dermatophilus congolensis, is typically found in livestock like horses and sheep. In Germany, 17 cases were identified in men from Berlin and Brandenburg who frequented sex-positive saunas. While not a sexually transmitted disease, the infection can be spread through close physical contact or moist environments.

Experts note that the concentration of aerosols from toilet flushing increases with higher water volumes, and while closing the lid helps, it only provides limited reduction in aerosol spread.