It's bad to spread germs in stores.
Darren is infected with a virus that spreads by air droplets, and he needs to buy food.
Darren wants to go to the grocery store.
Darren goes to the grocery store and wears a face covering.
Darren goes to the grocery store and does not wear a face covering.
Darren limits the amount of air droplets that get out to the store and can infect others.
Other people are exposed to Darren's virus.