Where Can I Find Actual GOOD Masks?

I have a doctor appointment soon, for my heart condition. I know paper masks don’t do anything to prevent pathogens but I heard the 3M ones - the ones with an air filter, are quite effective. Ive seen a lot for sale in Taipei (maybe because of cost) but I don’t know where I can find them in Taichung. Any advice? I just need one or any alternative brand that will actually provide me with protection for 30 minutes in the hospital.

A post was merged into an existing topic: Where are the masks?