If you have voluntary control over your bronchii, bronchioles and alveoli then you could fake a covid cough. Otherwise no.You don't have to "have a cough". A voluntary cough is all that is necessary. The app analyses the sound of air as it is rapidly expelled from the various structures inside the lungs.
Ann: ResApp announces positive results of COVID-19 screening test, page-125
Currently unlisted. Proposed listing date: 4 SEPTEMBER 2024 #