Covid-19: Health Ministry Malaysia says disinfection box, tunnel not effective and is harmful to human if the chemical solution with alcohol or chlorine

Covid-19: Health Ministry Malaysia says disinfection box, tunnel not effective and is harmful to human if the chemical solution with alcohol or chlorine
Covid-19: Health Ministry Malaysia says disinfection box, tunnel not effective and is harmful to human if the chemical solution with alcohol or chlorine. (Based on MaHTAS COVID-19 RAPID EVIDENCE UPDATES)
Spraying the external part of the body with alcohol or chlorine does not kill the virus inside the body of an infected person and can be harmful to mucous membranes (i.e. eyes, mouth).
Now the question comes into my mind, why this disinfectant gate or chamber is not recommend to use, yet no one stop manufacturer from producing and we can see the rest of the world is start installing this device.
Another question, is spraying chemical solution onto the external part of the body is not effective, and why all the cleaning, disinfectant process of the permit using the methods of spraying too?
I think we need more explanation from MOH or any specialist on this topic, what is the real reason behind?

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