Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Anti-splash tap nozzles; Faucet aerators; Faucet sprayers; Fog generators; Germicidal lamps for purifying air; Humidifiers; Humidifiers for household purposes; Humidifiers for household use; Plumbing fittings, namely, faucet filters; Taps being faucets; Taps for washstands; USB-powered humidifiers for household use; Vehicle-mounted air purifying apparatus; Water-saving aerators for faucets