{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T06:02:39Z","timestamp":1762063359318,"version":"build-2065373602"},"reference-count":56,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2022,8,16]],"date-time":"2022-08-16T00:00:00Z","timestamp":1660608000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Life"],"abstract":"<jats:p>The new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus has high infectivity, often masked by asymptomatic carriers, which allows it to spread rapidly and become a pandemic. Attempts to slow the pandemic at this stage depend on the ability to unmask asymptomatic carriers. The rapid diagnosis of active coronavirus disease 2019 (COVID-19) infection is one of the cornerstones of pandemic control, as the nasal cavity is the main gateway for SARS-CoV-2 entry and altered sense of smell is a feature of the current virus. In the present study, we therefore tested the olfactory threshold coupled with heart\u2013lung parameters in subjects undergoing traditional molecular testing, resulting in a significantly different score between asymptomatic subjects and healthy controls. In total, 82% of asymptomatic positives showed olfactory impairment; of these, 46% had severe hyposmia and 7% had anosmia, while in the control 9% had severe hyposmia and 0% had anosmia, respectively, which agrees with heart rate, breathing rate, and blood pressure parameter variations. The olfactory test coupled with physiological parameters may help to identify asymptomatic people. In conclusion, our results suggest that most asymptomatic individuals could be unmasked by mass olfactory rapid threshold screening and then referred to traditional slower diagnostic tests.<\/jats:p>","DOI":"10.3390\/life12081248","type":"journal-article","created":{"date-parts":[[2022,8,16]],"date-time":"2022-08-16T23:44:25Z","timestamp":1660693465000},"page":"1248","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Unmasking the \u2018Asymptomatic\u2019 COVID-19: A Nose Question"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5132-0029","authenticated-orcid":false,"given":"Andrea","family":"Mazzatenta","sequence":"first","affiliation":[{"name":"Dipartimento di Neuroscienze, Imaging and Clinical Science, \u2018G. d\u2019Annunzio\u2019 Chieti-Pescara University, Via dei Vestini 31, 66100 Chieti, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Berardi","sequence":"additional","affiliation":[{"name":"ENT Department, Istituto Clinico Citt\u00e0 Studi, Via Jommelli 17, 20131 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8412-6708","authenticated-orcid":false,"given":"Gabriele Alessandro","family":"Novarria","sequence":"additional","affiliation":[{"name":"ENT Department, Istituto Clinico Citt\u00e0 Studi, Via Jommelli 17, 20131 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4078-3973","authenticated-orcid":false,"given":"Giampiero","family":"Neri","sequence":"additional","affiliation":[{"name":"Dipartimento di Neuroscienze, Imaging and Clinical Science, \u2018G. d\u2019Annunzio\u2019 Chieti-Pescara University, Via dei Vestini 31, 66100 Chieti, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,16]]},"reference":[{"key":"ref_1","unstructured":"WHO (2022, July 01). 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