It's already been done, in pre-virus times. Check the sites for wearable art. I remember one that included some electronics so that it didn't "bloom" until triggered. You could probably do something with 3D printing, too.I think I’m going to invent some sort of skirt with fairly flexible, but fairly stiff prongs to stop anyone getting too close. Trouble is, by the time I’ve designed it and made it, all this will be over.
Or perhaps just an extra-long umbrella carried under your arm?