# Assessing the Risk of Spreading COVID-19 in the Room Utilizing Low-Cost Monitoring System
## 5 Advantages and Drawbacks  
Our inexpensive technique for measuring COVID-19 in a room has the following potential benefits:  
Accessibility: Our proposed method of measuring COVID-19 in a room would be more affordable for people and organisations with low financial resources, making it simpler to conduct broad monitoring in various settings such as workplaces, schools, and public transportation.  
Real-time monitoring: The system has the ability to monitor the virus in the air in real time, allowing people and organisations to take the proper precautions to lessen the risk of transmission. These precautions might include increasing ventilation, lowering occupancy, or donning the proper personal protective equipment.  
Early warning: The system could assist in providing early warning of an epidemic in a specific location by detecting airborne particles that could be carrying the virus. This  
Figure 5: Recording sound from the room.  
Figure 6: Frequency analysis of recording sound.  
would enable people and organisations to take preventive steps to lessen the spread of the virus.  
Non-invasive: By using this system, the presence of the virus can be detected without the need for blood tests or swabs. By doing this, the risk of exposure to potential test subjects, including healthcare personnel, could be decreased.  
Easy to use: These systems are generally easy to use and don't require specialised training, making it easier for individuals and organisations to implement them in various settings.  
It's critical to remember that these tools do not serve as a replacement for further preventive measures like mask use, physical separation, or regular hand washing. Yet, they can be an effective tool for locating possible risk locations and taking the necessary precautions to stop the virus's spread. While there are several above mentioned advantages to using a cheap system for measuring COVID-19 in a room, there are also some potential disadvantages, including:  
Reduced accuracy: More expensive laboratory-grade equipment is more accurate than less expensive devices, which could result in false positives or false negatives and possibly unneeded or insufficient actions.  
Low sensitivity: If a low viral load is present in the room, these sensors may not be sensitive enough to detect very low amounts of the virus, which could give the impression that everything is fine.  
Data interpretation: It may be difficult for people or organisations without a scientific background to properly interpret the data collected by these devices because it requires a certain level of technical knowledge.  
False sense of security: The use of this system may induce a false sense of security and complacency, causing people and organisations to disregard other preventative measures like keeping a physical distance and donning masks.  
When considering whether to utilise these devices to monitor COVID-19 in a space, it's crucial to carefully assess their limitations and potential downsides. It's also crucial to use them in conjunction with other preventive measures and to adhere to public health authorities' recommendations.