Disinfect home and work place.
Wear a mask in public.
Don't crowd.
Suck on herbal sweets or lozenges. Read this https://www.ncbi.nlm.nih.gov/pubmed/15889535 or this https://journals.sagepub.com/doi/pdf/10.1177/095632020501600205. Not too often, as long as you have the taste in your mouth, it is OK.
Refrain from touching anything in public.
Wash your hands the first thing you reach home or work place.
Get SARS - CoV-2 (CoVID-19) tested if you have to work with others.
If you are on the essential services list get your staff tested and start work.
Homes and work place should be well ventilated, do not close up entrances and exits that creates pockets of still air.
If you need a brain dead to give you SARS advice...