Who does not enjoy relaxing under a hot shower after a hard days work.
That taking a shower in certain circumstances can result in causing sickness is not well known.

Shower Filter Cartridge for SAFETY Microfein Filter Insert with membrane technology Filtration fineness level  0,15 Mm from 39,90 EUR incl. 19 % Tax excl.   Legionella Shower Filter Microfiltraton against Legionellae Bacteria from 99,00 EUR incl. 19 % Tax excl.