Bacteria rise up to 163 centimeters during flushing https://www.focus.de/gesundheit/gesundleben/beim-spuelen-auf-der-toilette-steigen-bakterien-bis-zu-163-zentimeter-hoch_9fa482aa-3e49-461d-8ea7-7ec03effd042.html Aerosol and bioaerosol generation from toilet flushing: A systematic review and risk factor analysis https://www.sciencedirect.com/science/article/pii/S0048969726007771 Horizontally, aerosols can still be detected at a distance of up to 1,5 meters!