One person can take precautions and pickup food for a large number of others. Here in NY, I was the only one out of 5 people leaving the house for 3 months to get food and used my full face P100 North respirator that I had in my workshop. P100 plus full sealed face covering with lots of hand sanitizer before and after donning/doffing means a pretty high level of safety. I could have easily picked up and delivered food for 30 other people in my free time if I knew there was the need. One person doing this full time delivering grocery orders could supply an entire neighborhood with just a single high efficiency respirator.