Should you wear an air mask when mixing chemicals, going to construction sites, working inside a warehouse, or doing other things that may cause sickness because of dust, virus or bacteria? The answer is yes. You need to wear one, for your own safety.
You should make sure that you are wearing a good quality air mask, so you’ll be sure that no dust, virus or bacteria would be inhaled. That’s what air mask are for. But low quality air mask might not do the job.
I personally would be wearing a mask when checking the quality of the umbrellas I am selling one by one. I got sick because of the dust coming from the umbrellas.