Subjects
allergy, fever
CHRONIC AIRWAY DISEASE, ALLERGY, OCULAR INFECTION
This experimental multiple crossover study was approved by the Siriraj Institutional Review Board, COA No. Si508/2021, and was performed in accordance with the Declaration of Helsinki. The study was registered in the Thai Clinical Trials Registry, No. TCTR20221222002 (22/12/2022). Healthy volunteers aged 18–80 years old were included. Subjects with the following criteria were excluded: fever or respiratory symptoms or systemic antibiotics administration within the past 2 weeks, chronic airway diseases, facial skin or ocular infection, inability to lie down flat on the back and allergy to adhesive paper tape (3M™ Micropore Tape 1530-1). Informed consent was obtained from all participants.