inclusion criteria: 1. age ≥18 years of age 2. able to give written informed consent 3. index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. 4. negative pregnancy test for women of childbearing age at baseline visit (includes screening). 5. able to operate and maintain nebuliser, as assessed by the investigator.

inclusion criteria: 1. age ≥18 years of age 2. able to give written informed consent 3. index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. 4. negative pregnancy test for women of childbearing age at baseline visit (includes screening). 5. able to operate and maintain nebuliser, as assessed by the investigator.

inclusion criteria: age ≥18 years of age able to give written informed consent index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. negative pregnancy test for women of childbearing age at baseline visit (includes screening). able to operate and maintain nebuliser, as assessed by the investigator.

inclusion criteria: age ≥18 years of age able to give written informed consent index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. negative pregnancy test for women of childbearing age at baseline visit (includes screening). able to operate and maintain nebuliser, as assessed by the investigator.

inclusion criteria: 1. age ≥18 years of age 2. able to give written informed consent 3. index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. 4. negative pregnancy test for women of childbearing age at baseline visit (includes screening). 5. able to operate and maintain nebuliser, as assessed by the investigator.

inclusion criteria: 1. age ≥18 years of age 2. able to give written informed consent 3. index cases: presenting with mild/moderate viral infection symptoms, who the investigator considers can be treated at home. 4. negative pregnancy test for women of childbearing age at baseline visit (includes screening). 5. able to operate and maintain nebuliser, as assessed by the investigator.