Story perspectives

Toilet flushing releases infectious aerosols near adult breathing zones

9/9/2026

Summary

Story summary

Australian researchers led by PhD student Lira Adiyani found toilet flushing releases aerosols into adult breathing zones.
Larger flush volumes and higher turbulence generated more particles, raising aerosol concentration.
Closing the toilet lid may reduce but does not fully prevent aerosol plumes.
Detected aerosols can contain legionella, influenza and norovirus, posing inhalation risk.
Environmental health professor Harriet Whiley said the risk mainly affects immunocompromised individuals, not typical households.

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Story summary

Australian researchers led by PhD student Lira Adiyani found toilet flushing releases aerosols into adult breathing zones.
Larger flush volumes and higher turbulence generated more particles, raising aerosol concentration.
Closing the toilet lid may reduce but does not fully prevent aerosol plumes.
Detected aerosols can contain legionella, influenza and norovirus, posing inhalation risk.
Environmental health professor Harriet Whiley said the risk mainly affects immunocompromised individuals, not typical households.