You should work from home if you are experiencing coughing/sneezing and feel unwell. This applies to any contagious respiratory infections to protect others in the office.
If you are on client work, you should request that they allow you to work remotely (to reduce contact with others outside your household).
If a client insists on you working on-site, discuss with your Account Manager on how to approach the issue.
If you plan to work from home (WFH), discuss with your manager and send an email as per "Working From Home (One Off) π‘" in https://my.sugarlearning.com/SSW/items/8331/
Follow | COVID-19/Coronavirus - Workplace Practices π¦
Figure: NSW Government recommendation for COVID-19 & Respiratory Infections