## 3 Results
Of the 245 study participants, 90.2% (\(n=221\)) reported that they knew that the biocidal agent used for the decontamination of the surface of PPE in  
Figure 4: Responses of professionals to the following survey questions: (**a**) Do you use sodium hypochlorite for surface cleaning/disinfection in your home? If the answer to the previous question was YES, do you have any concerns about handling sodium hypochlorite? (**b**) Have you had any kind of reaction to sodium hypochlorite in previous contact? If YES, please indicate the type(s) of reaction(s). * represents \(p<0.05\) by [PERSON] test with [PERSON]’s multiple comparisons test. the disinfection chamber was sodium hypochlorite, whereas 9.8% (\(n=24\)) did not, with significant difference between responses (\(p<0.05\)) (Figure 5c). The distribution of responses related to discomfort during use of the disinfection chamber is shown in Figure 6. Of the 245 participating professionals, 84.90 (\(n=208\)) did not report any discomfort or adverse event during the use of the disinfection chamber, whereas 15.10% (\(n=37\)) reported some type of discomfort, with significant difference between responses (\(p<0.05\)) (Figure 6a). In general, regarding the type of discomfort, eye irritation was the most frequently reported (25.68% or \(n=19\)) adverse event, followed by throat irritation (18.92% or \(n=14\)) (Figure 6b). It is important to note that the participants who reported some discomfort after the use of the chamber reported similar effects with the previous domestic use of the biocidal agent (Figure 4b and Table S2). In addition, no participant reported discomfort that was characterized as a claustrophobic sensation after using the proposed disinfection chamber. It is important to emphasize that the discomfort  
Figure 5: Responses of professionals to the following survey questions: (**a**) Do you consider sodium hypochlorite to be a good disinfect? (**b**) Did you know that sodium hypochlorite (0.10% to 0.50%) is effective for the inactivation of the new coronavirus and is recommended by the World Health Organization (WHO) for the disinfection of home and hospital environments? (**c**) Did you know that the disinfect solution used in the chamber for the instantaneous disinfection of personal protective equipment (PPE) is sodium hypochlorite solution? * represents \(p<0.05\) by [PERSON] test with [PERSON]’s multiple comparisons test. modalities reported were all mild or moderate, and none was of severe intensity (Table S2). Even in these cases, the professional who presented with the adverse event was promptly evaluated and guided by the study team, and no interventions were needed for any of the adverse events. The results that were obtained for the perception of professionals regarding the use of the disinfection chamber are presented in Figure 7. About 96.33% (\(n=236\)) of the professionals were aware that the disinfection technology available in hospitals and health units was developed to reduce the microbial load on the surface of PPE, including that of SARS-CoV-2. However, 3.67% (\(n=9\)) were unaware of this information, with significant difference between responses (\(p<0.05\)) (Figure 7a). The vast majority of professionals (68.57% or \(n=168\)) who were interviewed considered the use of the disinfection chamber before the PPE doffing process as a safe option, whereas 7.76% (\(n=19\)) of the professionals did not, with significant difference between responses (\(p<0.05\)). Of the total study participants, 23.67% (\(n=58\)) did not know regarding the safety of the technology available for use (Figure 7b). An important parameter that influences the effectiveness of the instantaneous disinfection process is the ability of the technology to evenly distribute the biocidal agent onto the surfaces of interest (PPE). Therefore, the participants were questioned about the visual perception regarding the uniform distribution of the droplets of the biocidal agent that were produced during spraying.