A system reduces risk of pathogen exposure within a space that is located within a facility having a plurality of spaces that periodically have one or more people within the space. The system includes one or more occupancy sensors that are configured to provide an indication of when the space is occupied and when the space is not occupied. A sanitizer is configured to sanitize surfaces within the space when activated. A controller is operably coupled with the one or more occupancy sensors and the sanitizer. The controller is configured to determine a designated time to sanitize the space based at least in part upon information received from the one or more occupancy sensors and to automatically instruct the sanitizer to sanitize surfaces within the space at the designated time.

Methods of capturing respiratory droplets are provided which use coatings comprising a polyelectrolyte polymer and a viscosity modifier. In embodiments, a method of capturing respiratory droplets comprises absorbing respiratory droplets on a surface of a coating, the coating comprising a polyelectrolyte polymer and a viscosity modifier, wherein absorbed droplets leave depressions in the surface of the coating. Coated substrates and coating compositions used to form the coated substrates are also encompassed.

Building ventilation systems comprising one or more air handling units arranged and configured to receive air from outside a building comprising one or more building areas and deliver outdoor air into a building are disclosed. The building ventilation system comprises a plurality of air quality sensors arranged to measure the quality of the air inside the building. The building ventilation system comprises a control system connected to the air handling units and configured to receive data from the air quality sensors. The control system is configured to control the activity of the air handling units in dependency of the data from the air quality sensors. The building ventilation system comprises a plurality of air cleaning units arranged to eliminate gaseous and particulate pollutants from the air inside the building. The control system is configured to control the air cleaning units in dependency of the data from the air quality sensors.

Building ventilation systems comprising one or more air handling units arranged and configured to receive air from outside a building comprising one or more building areas and deliver outdoor air into a building are disclosed. The building ventilation system comprises a plurality of air quality sensors arranged to measure the quality of the air inside the building. The building ventilation system comprises a control system connected to the air handling units and configured to receive data from the air quality sensors. The control system is configured to control the activity of the air handling units in dependency of the data from the air quality sensors. The building ventilation system comprises a plurality of air cleaning units arranged to eliminate gaseous and particulate pollutants from the air inside the building. The control system is configured to control the air cleaning units in dependency of the data from the air quality sensors.

A method of realizing benefits of indoor cleaning system through AIGC is disclosed and includes following steps: providing professionally generated data of an indoor cleaning system; providing user-generated data of the indoor cleaning system; providing an AIGC model and inputting the professionally generated data and the user-generated data for calculating, comparing and identifying to generate an automatically generated data; and providing an integrated benefit correction to promote an ultimate integration of the automatically generated data generated by the AIGC model, so as to optimize a deep learning processing data correction, and compare learning and improvement of the automatically generated data, wherein the AIGC model is led to quickly converge in a correct and applicable direction, and the automatically generated data are regressed to a most accurate one, so that the benefits of the indoor cleaning system are optimized for implementing the indoor cleaning system.

A method of realizing benefits of indoor cleaning system through AIGC is disclosed and includes following steps: providing professionally generated data of an indoor cleaning system; providing user-generated data of the indoor cleaning system; providing an AIGC model and inputting the professionally generated data and the user-generated data for calculating, comparing and identifying to generate an automatically generated data; and providing an integrated benefit correction to promote an ultimate integration of the automatically generated data generated by the AIGC model, so as to optimize a deep learning processing data correction, and compare learning and improvement of the automatically generated data, wherein the AIGC model is led to quickly converge in a correct and applicable direction, and the automatically generated data are regressed to a most accurate one, so that the benefits of the indoor cleaning system are optimized for implementing the indoor cleaning system.

Building ventilation systems comprising one or more air handling units arranged and configured to receive air from outside a building comprising one or more building areas and deliver outdoor air into a building are disclosed. The building ventilation system comprises a plurality of air quality sensors arranged to measure the quality of the air inside the building. The building ventilation system comprises a control system connected to the air handling units and configured to receive data from the air quality sensors. The control system is configured to control the activity of the air handling units in dependency of the data from the air quality sensors. The building ventilation system comprises a plurality of air cleaning units arranged to eliminate gaseous and particulate pollutants from the air inside the building. The control system is configured to control the air cleaning units in dependency of the data from the air quality sensors.

Building ventilation systems comprising one or more air handling units arranged and configured to receive air from outside a building comprising one or more building areas and deliver outdoor air into a building are disclosed. The building ventilation system comprises a plurality of air quality sensors arranged to measure the quality of the air inside the building. The building ventilation system comprises a control system connected to the air handling units and configured to receive data from the air quality sensors. The control system is configured to control the activity of the air handling units in dependency of the data from the air quality sensors. The building ventilation system comprises a plurality of air cleaning units arranged to eliminate gaseous and particulate pollutants from the air inside the building. The control system is configured to control the air cleaning units in dependency of the data from the air quality sensors.

A screen cover device and an air-cleaning device configured to be used together with such a screen cover device, wherein said screen cover device is configured for holding at least one disposable screen cover which when in use, is configured for covering at least a substantial part of an air outflow area of a screen of the air-cleaning device, wherein said screen cover device is provided as an attachment to the air-cleaning device and comprises: at least one disposable screen cover; and a first unit which is configured for keeping the at least one disposable screen cover when not in use and which is configured to be mounted to the air-cleaning device.